CVE-2026-90803

MEDIUMNVD 6.86.8
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.8 under NVD CVSS v3. EPSS exploit probability: 0.2% (9th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 5.3 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-09-14) is not newer than that change (2026-09-18), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Elevated

Also known asEUVD-2026-77633 (ENISA EUVD) · GHSA-fw55-q7rw-84f9 (GitHub Security Advisories)Source: ENISA EUVD

6.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

A security vulnerability has been detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_64_relocate_section of the file bfd/elf64-x86-64.c of the component ld. Such manipulation of the argument roff leads to buffer overflow. An attack has to be approached locally. The exploit has been disclosed publicly and may be used. Upgrading to version 2.48 addresses this issue. The name of the patch is 471130b39c03623ec6d78ece377ff4da3f6bfe7b. It is recommended to upgrade the affected component.

CVSS v3
6.8
EG Score
6.8MEDIUMmedium confidence
EG Risk
47
EG Risk 47/100

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)
Severity68% × 45%
Impact severity (EG Severity): CVSS 6.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
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 public PoC (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
0.2%
EPSS %ILE
9th
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 (6.8): severity, escalated by confirmed exploitation. This CVE's 6.8 is its impact severity (EG Severity), not escalated.

EG Severity
6.8 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.2% 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 low or medium mission impact; Track* at high (mission-essential systems).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 low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation public PoC (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 14, 2026

Last Modified

September 18, 2026

Advisory Details (4)

Auto-updated Sep 14, 2026
Patch available.
Web page

The GNU Operating System and the Free Software Movement

https://www.gnu.org/
Web page

sourceware.org Git - binutils-gdb.git/commit

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=471130b39c03623ec6d78ece377ff4da3f6bfe7b
Web page

cve_summit/Heap OOB readwrite and SEGV in `elf_x86_64_relocate_section` (bfdelf64-x86-64.c4530 4835) via malformed relocation.md at main · r1ck9-2q/cve_summit · GitHub

https://github.com/r1ck9-2q/cve_summit/blob/main/Heap%20OOB%20readwrite%20and%20SEGV%20in%20%60elf_x86_64_relocate_section%60%20(bfdelf64-x86-64.c4530%20%204835)%20via%20malformed%20relocation.md
Web page

34444 – ld: heap OOB read/write in elf_x86_64_relocate_section (bfd/elf64-x86-64.c:4530 / :4835) via malformed relocation

https://sourceware.org/bugzilla/show_bug.cgi?id=34444

Vendor Advisories for CVE-2026-90803(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatbinutils-main-2.46.1-1.1.hum12026-07-28redhat

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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
binutils2.40-2 ... 2.47.50.20260901-1 (126 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
binutils2.44-3 ... 2.47.50.20260901-1 (52 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
binutils2.44-3 ... 2.47.50.20260901-1 (52 versions)
  • every version on: no fix on record
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 62× 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 99 of 129 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 30 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:36 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  4. 2026-10-29 22:25 UTCOSV refresh
  5. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  6. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  7. 2026-10-27 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  8. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  9. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  10. 2026-10-25 13:51 UTCEG score recompute
  11. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  12. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  13. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  14. 2026-10-22 12:31 UTCEG score recompute
  15. 2026-10-22 12:31 UTCVendor advisory
  16. 2026-10-22 12:31 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  17. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  18. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  19. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  20. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  21. 2026-10-18 03:00 UTCEG score recompute
  22. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  23. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  24. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  25. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
Show 74 more
  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-10-12 14:46 UTCEG score recompute
  3. 2026-10-11 19:14 UTCEG score recompute
  4. 2026-10-11 16:30 UTCEG score recompute
  5. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  6. 2026-10-11 13:45 UTCEG score recompute
  7. 2026-10-11 09:40 UTCEG score recompute
  8. 2026-10-11 09:40 UTCVendor advisory
  9. 2026-10-11 09:39 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  11. 2026-10-10 07:47 UTCEG score recompute
  12. 2026-10-10 07:47 UTCVendor advisory
  13. 2026-10-10 07:47 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  14. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  15. 2026-10-09 07:06 UTCEG score recompute
  16. 2026-10-09 07:06 UTCVendor advisory
  17. 2026-10-09 07:06 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  18. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  19. 2026-10-08 06:36 UTCEG score recompute
  20. 2026-10-08 06:36 UTCVendor advisory
  21. 2026-10-08 06:36 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  22. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  23. 2026-10-07 06:05 UTCEG score recompute
  24. 2026-10-07 06:05 UTCVendor advisory
  25. 2026-10-07 06:05 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  26. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  27. 2026-10-06 05:35 UTCEG score recompute
  28. 2026-10-06 05:35 UTCVendor advisory
  29. 2026-10-06 05:35 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  30. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  31. 2026-10-05 05:03 UTCEG score recompute
  32. 2026-10-05 05:03 UTCVendor advisory
  33. 2026-10-05 05:03 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  34. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  35. 2026-10-04 04:32 UTCEG score recompute
  36. 2026-10-04 04:32 UTCVendor advisory
  37. 2026-10-04 04:32 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  38. 2026-10-03 04:02 UTCEG score recompute
  39. 2026-10-03 04:02 UTCVendor advisory
  40. 2026-10-03 04:02 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  41. 2026-10-02 03:22 UTCEG score recompute
  42. 2026-10-02 03:22 UTCVendor advisory
  43. 2026-10-02 03:22 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  44. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  45. 2026-10-01 02:07 UTCEG score recompute
  46. 2026-10-01 02:07 UTCVendor advisory
  47. 2026-10-01 02:07 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  48. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  49. 2026-09-30 01:28 UTCEG score recompute
  50. 2026-09-30 01:28 UTCVendor advisory
  51. 2026-09-30 01:28 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  52. 2026-09-28 21:10 UTCEG score recompute
  53. 2026-09-28 21:10 UTCVendor advisory
  54. 2026-09-28 21:10 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  55. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  56. 2026-09-27 20:40 UTCEG score recompute
  57. 2026-09-27 20:40 UTCVendor advisory
  58. 2026-09-27 20:39 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  59. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  60. 2026-09-26 20:09 UTCEG score recompute
  61. 2026-09-26 20:09 UTCVendor advisory
  62. 2026-09-26 20:09 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  63. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  64. 2026-09-25 19:39 UTCVendor advisory
  65. 2026-09-25 19:38 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  66. 2026-09-24 18:12 UTCEG score recompute
  67. 2026-09-24 18:12 UTCVendor advisory
  68. 2026-09-24 18:12 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  69. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  70. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  71. 2026-09-23 17:30 UTCVendor advisory
  72. 2026-09-23 17:30 UTCGHSA enrichmentGHSA-fw55-q7rw-84f9 · GitHub severity LOW · GitHub CVSS 5.3
  73. 2026-09-22 16:50 UTCEG score recompute
  74. 2026-09-22 16:50 UTCVendor advisory

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Frequently asked(5)

What is CVE-2026-90803?
CVE-2026-90803 is a medium-severity vulnerability; its CVE record was published on September 14, 2026. A security vulnerability has been detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_64_relocate_section of the file bfd/elf64-x86-64.c of the component ld. Such manipulation of the argument roff leads to buffer overflow. An attack has to be approached locally.…
When was the CVE record for CVE-2026-90803 published?
The CVE record for CVE-2026-90803 was published on September 14, 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 18, 2026; the record at its source may have been updated since.
Is CVE-2026-90803 actively exploited?
CVE-2026-90803 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (9th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-90803?
CVE-2026-90803 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2026-90803?
A fix for CVE-2026-90803 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-90803 are linked in the Vendor Advisories panel on this page.

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