CVE-2026-15003

MEDIUMPre-NVD 5.65.6—
EchelonGraph scoreMEDIUM confidence

Score 5.6 from GitHub Security Advisory published 2026-07-27. a secondary CVSS source baseline 5.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
5.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.6Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in the GNU Binutils (Binary Utilities) linker. This vulnerability, a heap-buffer-overflow read (CWE-125), occurs when the linker processes a specially crafted 32-bit XCOFF (Extended Common Object File Format) object file. An attacker could exploit this by providing a malicious file, leading to an out-of-bounds read of memory. This can result in information disclosure, potentially revealing sensitive heap data, and a Denial of Service (DoS) due to the linker crashing.

CVSS v3
5.6
EG Score
5.6(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity56% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

July 27, 2026

Last Modified

August 21, 2026

Advisory Details (3)

Auto-updated Jul 27, 2026
Patch available. Sources: redhat.
generic

34053 – Heap-buffer-overflow READ in xcoff_link_add_symbols() via unvalidated n_numaux index (CWE-125)

https://sourceware.org/bugzilla/show_bug.cgi?id=34053
redhat

2497805 – (CVE-2026-15003) CVE-2026-15003 binutils: GNU Binutils: Heap-buffer-overflow in linker leads to information disclosure and denial of service

https://bugzilla.redhat.com/show_bug.cgi?id=2497805
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-15003

Vendor Advisories for CVE-2026-15003(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 / EcosystemFixed in / 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

(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.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 21× in last 7d / 115× 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 132 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-15003?
CVE-2026-15003 is a medium vulnerability published on July 27, 2026. A flaw was found in the GNU Binutils (Binary Utilities) linker. This vulnerability, a heap-buffer-overflow read (CWE-125), occurs when the linker processes a specially crafted 32-bit XCOFF (Extended Common Object File Format) object file. An attacker could exploit this by providing a malicious…
When was CVE-2026-15003 disclosed?
CVE-2026-15003 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15003 actively exploited?
CVE-2026-15003 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 98.8% of all scored CVEs.
What is the CVSS score of CVE-2026-15003?
CVE-2026-15003 has a CVSS v3 base score of 5.6 (NVD).
How do I remediate CVE-2026-15003?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15003, 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.

Dependency Blast Radius

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