CVE-2026-10649

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-06-16. a secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.6Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in Pacemaker. An unauthenticated remote attacker can exploit an integer overflow vulnerability in the remote message decompression process. By sending a specially crafted compressed remote message before authentication, an attacker can cause memory corruption, leading to a denial of service (DoS) in the CIB remote listener. This can result in the affected service crashing.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
54(Track)
EG Risk 54/100SSVC: 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
Severity86% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

June 16, 2026

Last Modified

August 21, 2026

Advisory Details (3)

Auto-updated Jun 16, 2026
Patch available. Sources: redhat, github_pr.
github_pr

Fix integer overflows in remote message code

Upstream fix in progress (PR #4128 · clusterLabs/pacemaker, state=open)

https://github.com/clusterLabs/pacemaker/pull/4128
redhat

2462817 – (CVE-2026-10649) CVE-2026-10649 pacemaker: Pacemaker: Denial of Service via integer overflow in remote message decompression

https://bugzilla.redhat.com/show_bug.cgi?id=2462817
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-10649

Vendor Advisories for CVE-2026-10649(12)

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

Patch Availability(11)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpacemaker-0:1.1.23-1.el7_9.22026-07-22redhat
redhatpacemaker-0:2.1.5-9.7.el8_82026-07-20redhat
redhatpacemaker-0:2.1.2-4.el8_6.112026-07-20redhat
redhatpacemaker-0:2.0.5-9.el8_4.122026-07-20redhat
redhatpacemaker-0:2.1.9-1.4.el9_62026-07-16redhat
redhatpacemaker-0:3.0.0-5.3.el10_02026-07-16redhat
redhatpacemaker-0:2.1.5-9.el9_2.72026-07-16redhat
redhatpacemaker-0:2.1.7-5.5.el9_42026-07-16redhat
redhatpacemaker-0:3.0.1-5.el10_2.12026-07-16redhat
redhatpacemaker-0:2.1.10-3.el9_82026-07-14redhat
redhatpacemaker-0:2.1.7-5.6.el8_102026-07-14redhat

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
pacemaker2.0.5-2 ... 3.0.1-1.1 (23 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
pacemaker2.1.5-1 ... 3.0.1-1.1 (18 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
pacemaker3.0.0-2, 3.0.1-1, 3.0.1-1.1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
pacemaker3.0.0-2, 3.0.1-1, 3.0.1-1.1——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 3× in last 7d / 35× 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 295 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-10649?
CVE-2026-10649 is a high vulnerability published on June 16, 2026. A flaw was found in Pacemaker. An unauthenticated remote attacker can exploit an integer overflow vulnerability in the remote message decompression process. By sending a specially crafted compressed remote message before authentication, an attacker can cause memory corruption, leading to a denial…
When was CVE-2026-10649 disclosed?
CVE-2026-10649 was first published in the National Vulnerability Database on June 16, 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-2026-10649 actively exploited?
CVE-2026-10649 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.5% of all scored CVEs.
What is the CVSS score of CVE-2026-10649?
CVE-2026-10649 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-10649?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-10649, 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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