CVE-2026-15003

MEDIUMPre-NVD 5.65.6
EchelonGraph scoreMEDIUM confidence

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

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, GitHub Security Advisory, a secondary CVSS source
5.6EG
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: 0.2%CVSS: 5.6Exploit: None knownExposed services: Not assessed

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
5.6MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

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 (value × EchelonGraph’s weight)
Severity56% × 45%
The EG Score, 5.6 of 10.
Exploitation0.1% × 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
0.2%
EPSS %ILE
3rd
KEV
Not listed

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.

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

July 27, 2026

Last Modified

September 1, 2026

Advisory Details (3)

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

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
Red Hat

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
Red HatMentions a patch (unverified)

cve-details

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

Vendor Advisories for CVE-2026-15003(3)

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
binutils2.35.2-2 ... 2.47-2 (213 versions)
  • every version on: no fix on record
—
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 ... 2.46.90.20260712-1 (42 versions)
  • every version up to 2.47-1: fixed in 2.47-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 67× 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 100 of 252 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. None are among the latest 100 rows. The 152 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  2. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  3. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  4. 2026-10-12 16:33 UTCEG score recompute
  5. 2026-10-11 20:10 UTCEG score recompute
  6. 2026-10-11 17:22 UTCEG score recompute
  7. 2026-10-11 14:55 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  9. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  10. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  11. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  12. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  13. 2026-10-07 04:14 UTCEG score recompute
  14. 2026-10-07 04:14 UTCVendor advisory
  15. 2026-10-07 04:14 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  16. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  17. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  18. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  19. 2026-10-04 07:20 UTCEG score recompute
  20. 2026-10-04 07:20 UTCVendor advisory
  21. 2026-10-04 07:20 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  22. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  23. 2026-10-02 18:29 UTCEG score recompute
  24. 2026-10-02 18:29 UTCVendor advisory
  25. 2026-10-02 18:29 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
Show 75 more
  1. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  2. 2026-10-01 03:54 UTCEG score recompute
  3. 2026-10-01 03:54 UTCVendor advisory
  4. 2026-10-01 03:54 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  5. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  6. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  7. 2026-09-29 07:54 UTCEG score recompute
  8. 2026-09-29 07:54 UTCVendor advisory
  9. 2026-09-29 07:54 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  10. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  11. 2026-09-28 03:58 UTCEG score recompute
  12. 2026-09-28 03:58 UTCVendor advisory
  13. 2026-09-28 03:58 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  14. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  15. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 3rd percentile
  16. 2026-09-25 07:21 UTCEG score recompute
  17. 2026-09-25 07:21 UTCVendor advisory
  18. 2026-09-25 07:21 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  19. 2026-09-23 22:04 UTCEG score recompute
  20. 2026-09-23 22:04 UTCVendor advisory
  21. 2026-09-23 22:04 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  22. 2026-09-22 21:50 UTCEG score recompute
  23. 2026-09-22 21:50 UTCVendor advisory
  24. 2026-09-22 21:50 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  25. 2026-09-19 08:22 UTCEG score recompute
  26. 2026-09-19 08:22 UTCVendor advisory
  27. 2026-09-19 08:22 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  28. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  29. 2026-09-18 08:59 UTCEG score recompute
  30. 2026-09-18 08:59 UTCVendor advisory
  31. 2026-09-18 08:59 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  32. 2026-09-17 10:24 UTCEG score recompute
  33. 2026-09-17 10:24 UTCVendor advisory
  34. 2026-09-17 10:24 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  35. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  36. 2026-09-16 11:54 UTCEG score recompute
  37. 2026-09-16 11:54 UTCVendor advisory
  38. 2026-09-16 11:54 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  39. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  40. 2026-09-15 09:13 UTCEG score recompute
  41. 2026-09-15 09:13 UTCVendor advisory
  42. 2026-09-15 09:13 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  43. 2026-09-14 04:20 UTCEG score recompute
  44. 2026-09-14 04:20 UTCVendor advisory
  45. 2026-09-14 04:20 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  46. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  47. 2026-09-13 05:50 UTCVendor advisory
  48. 2026-09-13 05:50 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  49. 2026-09-12 07:18 UTCEG score recompute
  50. 2026-09-12 07:18 UTCVendor advisory
  51. 2026-09-12 07:18 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  52. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  53. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  54. 2026-09-11 08:47 UTCVendor advisory
  55. 2026-09-11 08:47 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  56. 2026-09-10 10:17 UTCEG score recompute
  57. 2026-09-10 10:17 UTCVendor advisory
  58. 2026-09-10 10:17 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  59. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  60. 2026-09-09 08:24 UTCEG score recompute
  61. 2026-09-09 08:24 UTCVendor advisory
  62. 2026-09-09 08:24 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  63. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  64. 2026-09-07 21:04 UTCEG score recompute
  65. 2026-09-07 21:04 UTCVendor advisory
  66. 2026-09-07 21:04 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  67. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  68. 2026-09-06 17:47 UTCEG score recompute
  69. 2026-09-06 17:47 UTCVendor advisory
  70. 2026-09-06 17:47 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  71. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  72. 2026-09-05 19:16 UTCEG score recompute
  73. 2026-09-05 19:16 UTCVendor advisory
  74. 2026-09-05 19:16 UTCGHSA enrichmentGHSA-3mxj-5hq2-2h4f · GitHub CVSS 5.6
  75. 2026-09-04 12:33 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-15003?
CVE-2026-15003 is a medium-severity vulnerability; its CVE record was 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 made public?
CVE-2026-15003 was made public on July 27, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on July 27, 2026. EchelonGraph's copy of the record carries a last-modified date of September 1, 2026; the record at its source may have been updated since.
Is CVE-2026-15003 actively exploited?
CVE-2026-15003 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15003?
CVE-2026-15003 has a CVSS base score of 5.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15003?
A fix for CVE-2026-15003 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-15003 are linked in the Vendor Advisories panel on this page.

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