CVE-2026-10649

HIGHPre-NVD 8.68.6
EchelonGraph scoreMEDIUM confidence

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

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, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2026-37128 (ENISA EUVD) · GHSA-94r4-qcg7-69qj (GitHub Security Advisories)Source: ENISA EUVD

8.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.6Exploit: None knownExposed services: Not assessed

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
8.6HIGHmedium confidence
EG Risk
54
EG Risk 54/100

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)
Severity86% × 45%
Impact severity (EG Severity): CVSS 8.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
46th
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 (8.6): severity, escalated by confirmed exploitation. This CVE's 8.6 is its impact severity (EG Severity), not escalated.

EG Severity
8.6 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.6% 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; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

June 16, 2026

Last Modified

August 21, 2026

Advisory Details (3)

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

Fix integer overflows in remote message code

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

https://github.com/clusterLabs/pacemaker/pull/4128
Red Hat

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
Red HatMentions a patch (unverified)

cve-details

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

Patch Availability(11)

Vendor / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
pacemaker2.0.5-2 ... 3.0.1-1.1 (23 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
pacemaker2.1.5-1 ... 3.0.1-1.1 (18 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
pacemaker3.0.0-2, 3.0.1-1, 3.0.1-1.1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pacemaker3.0.0-2, 3.0.1-1, 3.0.1-1.1
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 41× 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 341 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 241 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  3. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  4. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  5. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  6. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  7. 2026-10-25 14:54 UTCEG score recompute
  8. 2026-10-24 20:23 UTCEG score recompute
  9. 2026-10-24 20:23 UTCVendor advisory
  10. 2026-10-24 20:23 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  11. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  12. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  13. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  14. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  15. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  16. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  17. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  18. 2026-10-18 05:08 UTCEG score recompute
  19. 2026-10-17 19:24 UTCEG score recompute
  20. 2026-10-17 19:24 UTCVendor advisory
  21. 2026-10-17 19:23 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  22. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  24. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  25. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
Show 75 more
  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  2. 2026-10-12 16:39 UTCEG score recompute
  3. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  4. 2026-10-11 20:14 UTCEG score recompute
  5. 2026-10-11 18:26 UTCEG score recompute
  6. 2026-10-11 15:00 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  8. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  9. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  10. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  11. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  12. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  13. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  14. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  16. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  17. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  18. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  19. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  20. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  21. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  24. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  25. 2026-09-14 03:31 UTCEG score recompute
  26. 2026-09-14 03:31 UTCVendor advisory
  27. 2026-09-14 03:31 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  28. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  29. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  30. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  31. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  32. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  33. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  34. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  35. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  36. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  37. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  38. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  39. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  40. 2026-08-30 22:48 UTCEG score recompute
  41. 2026-08-30 22:48 UTCVendor advisory
  42. 2026-08-30 22:48 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  43. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  44. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  45. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  46. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  47. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  48. 2026-08-24 23:24 UTCEG score recompute
  49. 2026-08-24 23:24 UTCVendor advisory
  50. 2026-08-24 23:24 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  51. 2026-08-23 23:18 UTCVendor advisory
  52. 2026-08-23 23:18 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  53. 2026-08-23 09:26 UTCEG score recompute
  54. 2026-08-23 09:26 UTCVendor advisory
  55. 2026-08-23 09:26 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  56. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  57. 2026-08-22 01:32 UTCEG score recompute
  58. 2026-08-22 01:32 UTCVendor advisory
  59. 2026-08-22 01:32 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  60. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  61. 2026-08-21 12:20 UTCEG score recompute
  62. 2026-08-21 12:20 UTCVendor advisory
  63. 2026-08-21 12:20 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  64. 2026-08-21 12:15 UTCEG score recompute
  65. 2026-08-21 12:15 UTCVendor advisory
  66. 2026-08-21 12:15 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  67. 2026-08-21 11:55 UTCEG score recompute
  68. 2026-08-21 11:55 UTCVendor advisory
  69. 2026-08-21 11:55 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  70. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  71. 2026-08-20 21:45 UTCVendor advisory
  72. 2026-08-20 21:45 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6
  73. 2026-08-20 08:33 UTCEG score recompute
  74. 2026-08-20 08:33 UTCVendor advisory
  75. 2026-08-20 08:33 UTCGHSA enrichmentGHSA-94r4-qcg7-69qj · GitHub severity HIGH · GitHub CVSS 8.6

Frequently asked(5)

What is CVE-2026-10649?
CVE-2026-10649 is a high-severity vulnerability; its CVE record was 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 made public?
CVE-2026-10649 was made public on June 16, 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 June 16, 2026. EchelonGraph's copy of the record carries a last-modified date of August 21, 2026; the record at its source may have been updated since.
Is CVE-2026-10649 actively exploited?
CVE-2026-10649 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-10649?
CVE-2026-10649 has a CVSS base score of 8.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-10649?
A fix for CVE-2026-10649 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-10649 are linked in the Vendor Advisories panel on this page.

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