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% (10th 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
10th
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 7× in last 7d / 37× 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 138 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 39 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

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

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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 (10th 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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