CVE-2026-4647

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2026-03-23. NVD baseline CVSS 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in the GNU Binutils BFD library, a widely used component for handling binary files such as object files and executables. The issue occurs when processing specially crafted XCOFF object files, where a relocation type value is not properly validated before being used. This can cause the program to read memory outside of intended bounds. As a result, affected tools may crash or expose unintended memory contents, leading to denial-of-service or limited information disclosure risks.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

March 23, 2026

Last Modified

September 1, 2026

Advisory Details (3)

Auto-updated Jun 30, 2026
Patch available. Sources: redhat.
generic

33919 – Out-of-bounds read in XCOFF relocation processing (coff-rs6000.c, coff64-rs6000.c)

https://sourceware.org/bugzilla/show_bug.cgi?id=33919
redhat Patch Available

2450302 – (CVE-2026-4647) CVE-2026-4647 binutils: Out-of-Bounds Read in XCOFF Relocation Processing in GNU Binutils BFD Library

https://bugzilla.redhat.com/show_bug.cgi?id=2450302
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-4647

Vendor Advisories for CVE-2026-4647(4)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatbinutils-main-2.46.1-1.hum12026-07-13redhat
redhatbinutils-main-2.45.1-5.1.hum12026-06-30redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
binutils2.35.2-2 ... 2.47-2 (213 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
binutils2.40-2 ... 2.47-2 (118 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
binutils2.44-3 ... 2.47-2 (44 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
binutils2.44-3 ... 2.46.90.20260712-1 (42 versions)2.47-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 56× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 110 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-4647?
CVE-2026-4647 is a medium vulnerability published on March 23, 2026. A flaw was found in the GNU Binutils BFD library, a widely used component for handling binary files such as object files and executables. The issue occurs when processing specially crafted XCOFF object files, where a relocation type value is not properly validated before being used. This can cause…
When was CVE-2026-4647 disclosed?
CVE-2026-4647 was first published in the National Vulnerability Database on March 23, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4647 actively exploited?
CVE-2026-4647 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 93.7% of all scored CVEs.
What is the CVSS score of CVE-2026-4647?
CVE-2026-4647 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-4647?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4647, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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