CVE-2026-4775

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-03-24. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2026-14901 (ENISA EUVD) · GHSA-cm99-m826-vgg7 (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

March 24, 2026

Last Modified

October 26, 2026

Advisory Details (5)

Auto-updated Apr 30, 2026
Patch available. Sources: redhat.
Web pageMentions a patch (unverified)

[SECURITY] [DLA 4536-1] tiff security update

https://lists.debian.org/debian-lts-announce/2026/04/msg00016.html
Red HatMentions a patch (unverified)

2450768 – (CVE-2026-4775) CVE-2026-4775 libtiff: libtiff: Arbitrary code execution or denial of service via signed integer overflow in TIFF file processing

Affected: Red Hat Enterprise Linux 10

https://bugzilla.redhat.com/show_bug.cgi?id=2450768
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-4775
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:12271
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:12265

Patch Availability(28)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhai/base-image-neuron-rhel9:17907035422026-10-01redhat
redhatlibtiff-main-4.7.1-2.3.hum12026-06-30redhat
redhatlibtiff-main-4.7.1-2.2.hum12026-06-26redhat
redhatrhaiis/vllm-rocm-rhel9:17823530932026-06-25redhat
redhatrhaiis/vllm-cuda-rhel9:17823528472026-06-25redhat
redhatrhaiis/vllm-spyre-rhel9:17823529192026-06-25redhat
redhatrhaiis/model-opt-cuda-rhel9:17823529502026-06-25redhat
redhatlibtiff-0:4.0.3-35.el7_9.22026-06-15redhat
redhatrhaiis/model-opt-cuda-rhel9:17806819842026-06-10redhat
redhatcompat-libtiff3-0:3.9.4-12.el7_9.22026-06-10redhat
redhatcompat-libtiff3-0:3.9.4-13.el8_6.22026-05-26redhat
redhatcompat-libtiff3-0:3.9.4-13.el8_4.22026-05-26redhat
redhatcompat-libtiff3-0:3.9.4-15.el8_102026-05-26redhat
redhatcompat-libtiff3-0:3.9.4-13.el8_8.22026-05-26redhat
redhatlibtiff-0:4.0.9-18.el8_4.22026-05-20redhat
redhatlibtiff-0:4.6.0-6.el10_0.32026-05-20redhat
redhatlibtiff-0:4.4.0-8.el9_2.52026-05-20redhat
redhatlibtiff-0:4.4.0-12.el9_4.52026-05-20redhat
redhatlibtiff-0:4.0.9-21.el8_6.22026-05-20redhat
redhatlibtiff-0:4.4.0-13.el9_6.42026-05-20redhat
redhatlibtiff-0:4.0.9-29.el8_8.22026-05-20redhat
redhatlibtiff-0:4.2.0-3.el9_0.32026-05-20redhat
redhatlibtiff-0:4.6.0-8.el10_2.12026-05-19redhat
redhatlibtiff-0:4.4.0-18.el9_82026-05-19redhat
redhatlibtiff-0:4.0.9-37.el8_102026-05-11redhat
redhatmingw-libtiff-0:4.0.9-4.el8_102026-05-07redhat
redhatlibtiff-0:4.6.0-6.el10_1.32026-04-30redhat
redhatlibtiff-0:4.4.0-15.el9_7.32026-04-30redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 8 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
tiff—
  • every version up to 4.7.2-r0: fixed in 4.7.2-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
tiff—
  • every version up to 4.7.2-r0: fixed in 4.7.2-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
tiff—
  • every version up to 4.7.2-r0: fixed in 4.7.2-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
tiff—
  • every version up to 4.7.2-r0: fixed in 4.7.2-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
tiff4.2.0-1 ... 4.2.0-1+deb11u7 (8 versions)
  • every version up to 4.2.0-1+deb11u8: fixed in 4.2.0-1+deb11u8
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
tiff4.5.0-6, 4.5.0-6+deb12u1, 4.5.0-6+deb12u2, 4.5.0-6+deb12u3
  • every version up to 4.5.0-6+deb12u4: fixed in 4.5.0-6+deb12u4
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
tiff4.7.0-3, 4.7.0-3+deb13u1
  • every version up to 4.7.0-3+deb13u2: fixed in 4.7.0-3+deb13u2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
tiff4.7.0-3, 4.7.0-4, 4.7.0-5, 4.7.1-1
  • every version up to 4.7.1-2: fixed in 4.7.1-2
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(9)

Data Freshness Timeline

(refreshed 10× in last 7d / 45× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 250 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 150 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  3. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  4. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  5. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  6. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  7. 2026-10-26 19:29 UTCEG score recompute
  8. 2026-10-26 19:29 UTCVendor advisory
  9. 2026-10-26 19:29 UTCGHSA enrichmentGHSA-cm99-m826-vgg7 · GitHub severity HIGH · GitHub CVSS 7.8
  10. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  11. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  12. 2026-10-25 14:24 UTCEG score recompute
  13. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  14. 2026-10-24 07:28 UTCEG score recompute
  15. 2026-10-24 07:28 UTCVendor advisory
  16. 2026-10-24 07:28 UTCGHSA enrichmentGHSA-cm99-m826-vgg7 · GitHub severity HIGH · GitHub CVSS 7.8
  17. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  18. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  19. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  20. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  21. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-10-18 03:35 UTCEG score recompute
  24. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  25. 2026-10-17 12:39 UTCEG score recompute
Show 75 more
  1. 2026-10-17 12:39 UTCVendor advisory
  2. 2026-10-17 12:38 UTCGHSA enrichmentGHSA-cm99-m826-vgg7 · GitHub severity HIGH · GitHub CVSS 7.8
  3. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  4. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  5. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  6. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  7. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  8. 2026-10-12 16:01 UTCEG score recompute
  9. 2026-10-11 19:44 UTCEG score recompute
  10. 2026-10-11 16:59 UTCEG score recompute
  11. 2026-10-11 14:23 UTCEG score recompute
  12. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  13. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  14. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  15. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  16. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  17. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  20. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  21. 2026-10-02 02:19 UTCEG score recompute
  22. 2026-10-02 02:19 UTCVendor advisory
  23. 2026-10-02 02:18 UTCGHSA enrichmentGHSA-cm99-m826-vgg7 · GitHub severity HIGH · GitHub CVSS 7.8
  24. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  25. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  26. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  27. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  28. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  29. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  30. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  31. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  32. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  33. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  34. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  35. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  36. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  37. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  38. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  39. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  40. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  41. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  42. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  43. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  44. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  45. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  46. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  47. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  48. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  49. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  50. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  51. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  52. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  53. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  54. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  55. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  56. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  57. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  58. 2026-08-16 10:38 UTCEG score recompute
  59. 2026-08-16 10:38 UTCVendor advisory
  60. 2026-08-16 10:38 UTCGHSA enrichmentGHSA-cm99-m826-vgg7 · GitHub severity HIGH · GitHub CVSS 7.8
  61. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  62. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  63. 2026-08-14 19:41 UTCVendor advisory
  64. 2026-08-14 19:41 UTCGHSA enrichmentGHSA-cm99-m826-vgg7 · GitHub severity HIGH · GitHub CVSS 7.8
  65. 2026-08-14 06:51 UTCEG score recompute
  66. 2026-08-14 06:51 UTCVendor advisory
  67. 2026-08-14 06:51 UTCGHSA enrichmentGHSA-cm99-m826-vgg7 · GitHub severity HIGH · GitHub CVSS 7.8
  68. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  69. 2026-08-12 21:30 UTCEG score recompute
  70. 2026-08-12 21:30 UTCVendor advisory
  71. 2026-08-12 21:30 UTCGHSA enrichmentGHSA-cm99-m826-vgg7 · GitHub severity HIGH · GitHub CVSS 7.8
  72. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  73. 2026-08-11 21:08 UTCEG score recompute
  74. 2026-08-11 21:08 UTCVendor advisory
  75. 2026-08-11 21:08 UTCGHSA enrichmentGHSA-cm99-m826-vgg7 · GitHub severity HIGH · GitHub CVSS 7.8

Frequently asked(5)

What is CVE-2026-4775?
CVE-2026-4775 is a high-severity vulnerability; its CVE record was published on March 24, 2026. A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations,…
When was CVE-2026-4775 made public?
CVE-2026-4775 was made public on March 24, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on March 24, 2026. EchelonGraph's copy of the record carries a last-modified date of October 26, 2026; the record at its source may have been updated since.
Is CVE-2026-4775 actively exploited?
CVE-2026-4775 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-4775?
CVE-2026-4775 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-4775?
A fix for CVE-2026-4775 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-4775 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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