CVE-2026-54604

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (44th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-82437 (ENISA EUVD)Source: ENISA EUVD

5.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

OpenSlide is a C library for reading whole slide image files. Prior to 4.0.1, a behavior change in libtiff 4.7.1 causes the indirect TIFF tile path in src/openslide-decode-tiff.c and _openslide_tiff_read_tile() to request a full-height destination for a partial bottom tile row, allowing uninitialized heap memory to enter pixel data returned by openslide_read_region(). A crafted but valid slide can trigger the issue in TIFF-based formats other than Hamamatsu NDPI when a network service renders attacker-provided slides. Successful extraction depends on pixel transparency handling and recompression, OpenSlide with libtiff 4.7.0 or earlier is not affected, and official binary builds 4.0.0.10 and 4.0.0.11 are affected. This issue is fixed in OpenSlide 4.0.1 and official binary build 4.0.0.12.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

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)
Severity53% × 45%
Impact severity (EG Severity): CVSS 5.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 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 every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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
0.5%
EPSS %ILE
44th
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 (5.3): severity, escalated by confirmed exploitation. This CVE's 5.3 is its impact severity (EG Severity), not escalated.

EG Severity
5.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). 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 every mission impact level.CISA BOD 26-04: 60 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 every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 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 partial (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

September 17, 2026

Last Modified

September 23, 2026

Advisory Details (7)

Auto-updated Sep 17, 2026
Patch available. Sources: github, github_pr, github_commit, github_release.
Web page

`TIFFReadRGBAImageOriented` always places output in bottom left of raster (#791) · Issues · libtiff / libtiff · GitLab

https://gitlab.com/libtiff/libtiff/-/work_items/791
GitHub release Patch Available

OpenSlide 4.0.1

Patch available: openslide/openslide v4.0.1

https://github.com/openslide/openslide/releases/tag/v4.0.1
GitHub commit Patch Available

commit a4f0fb0ec462 (openslide/openslide)

Patch available: openslide/openslide v4.0.1 (contains commit a4f0fb0ec462)

https://github.com/openslide/openslide/commit/a4f0fb0ec462edcea97ff22288f606ac6cd370f5
GitHub pull request Patch Available

tiff: fix corrupt non-JPEG partial bottom tile row on libtiff 4.7.1

Patch available: openslide/openslide v4.0.1 (PR #706 merged 2026-03-06)

https://github.com/openslide/openslide/pull/706
GitHub pull request

Fix corrupt partial bottom tile row on non-JPEG, non-JP2K TIFF levels

Fix merged in openslide/openslide-bin PR #436 on 2026-03-09 — awaiting tagged release

https://github.com/openslide/openslide-bin/pull/436
Web page

Edge tile corruption in openslide-bin 4.0.0.11 · Issue #433 · openslide/openslide-bin · GitHub

https://github.com/openslide/openslide-bin/issues/433
GitHub advisoryMentions a patch (unverified)

openslide_read_region() can return uninitialized memory in OpenSlide < 4.0.1 with libtiff 4.7.1 (CVE-2026-54604) · Advisory · openslide/openslide · GitHub

https://github.com/openslide/openslide/security/advisories/GHSA-f734-jv98-5677

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
openslide3.4.1+dfsg-6 ... 4.0.1+dfsg-2 (9 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
openslide3.4.1+dfsg-7 ... 4.0.1+dfsg-2 (8 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
openslide3.4.1+dfsg-7, 3.4.1+dfsg-8, 3.4.1+dfsg-9, 4.0.1+dfsg-1~0exp2, 4.0.1+dfsg-1~0exp3
  • every version up to 4.0.1+dfsg-1: fixed in 4.0.1+dfsg-1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 44× 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.

  1. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  3. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  4. 2026-10-30 11:25 UTCOSV refresh
  5. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  6. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  7. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  8. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  9. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  10. 2026-10-25 14:19 UTCEG score recompute
  11. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  12. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  13. 2026-10-22 21:20 UTCEG score recompute
  14. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  15. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  17. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  18. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  19. 2026-10-18 03:30 UTCEG score recompute
  20. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  21. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  22. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  23. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  24. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  25. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
Show 46 more
  1. 2026-10-12 15:56 UTCEG score recompute
  2. 2026-10-11 19:39 UTCEG score recompute
  3. 2026-10-11 16:54 UTCEG score recompute
  4. 2026-10-11 14:17 UTCEG score recompute
  5. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  6. 2026-10-10 20:11 UTCEG score recompute
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  8. 2026-10-09 20:18 UTCEG score recompute
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  10. 2026-10-08 20:26 UTCEG score recompute
  11. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  13. 2026-10-06 18:44 UTCEG score recompute
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  15. 2026-10-05 18:52 UTCEG score recompute
  16. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-10-03 18:49 UTCEG score recompute
  19. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  20. 2026-10-02 18:18 UTCEG score recompute
  21. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  22. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  23. 2026-09-30 18:16 UTCEG score recompute
  24. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  25. 2026-09-29 18:21 UTCEG score recompute
  26. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  27. 2026-09-28 18:17 UTCEG score recompute
  28. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  29. 2026-09-27 18:09 UTCEG score recompute
  30. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  31. 2026-09-26 18:16 UTCEG score recompute
  32. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  33. 2026-09-24 18:21 UTCEG score recompute
  34. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  35. 2026-09-23 18:28 UTCEG score recompute
  36. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  37. 2026-09-22 20:04 UTCEG score recompute
  38. 2026-09-20 20:19 UTCEG score recompute
  39. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  40. 2026-09-19 20:26 UTCEG score recompute
  41. 2026-09-18 20:33 UTCEG score recompute
  42. 2026-09-18 20:10 UTCEG score recompute
  43. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  44. 2026-09-17 21:20 UTCEG score recompute
  45. 2026-09-17 20:34 UTCEG score recomputeFirst assessed: 5.3 MEDIUM
  46. 2026-09-17 20:34 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Same product

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Debian:12:openslide

Frequently asked(5)

What is CVE-2026-54604?
CVE-2026-54604 is a medium-severity vulnerability; its CVE record was published on September 17, 2026. OpenSlide is a C library for reading whole slide image files. Prior to 4.0.1, a behavior change in libtiff 4.7.1 causes the indirect TIFF tile path in src/openslide-decode-tiff.c and _openslide_tiff_read_tile() to request a full-height destination for a partial bottom tile row, allowing…
When was the CVE record for CVE-2026-54604 published?
The CVE record for CVE-2026-54604 was published on September 17, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 23, 2026; the record at its source may have been updated since.
Is CVE-2026-54604 actively exploited?
CVE-2026-54604 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (44th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54604?
CVE-2026-54604 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54604?
A fix for CVE-2026-54604 is available: update to the fixed version the vendor names in its advisory.

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