CVE-2026-15811

MEDIUMPre-NVD 5.85.8—
EchelonGraph scoreMEDIUM confidence

Score 5.8 from GitHub Security Advisory published 2026-07-21. a secondary CVSS source baseline 5.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A vulnerability was found in kronosnet's (version <=1.34) cryptographic configuration management. The framework does not correctly zero-out or wipe sensitive memory segments after executing changes to its cryptographic configuration. This omission leaves raw encryption keys resident in memory after the associated structures are freed. A local attacker capable of leveraging memory disclosure techniques could exploit this flaw to retrieve the active encryption key, allowing them to decrypt cluster network communications or inject malicious packets to cause severe high-availability cluster instability.

CVSS v3
5.8
EG Score
5.8(medium)
EG Risk
26(Track)
EG Risk 26/100SSVC: 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
Severity58% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
0%
KEV
Not listed

Published

July 21, 2026

Last Modified

August 21, 2026

Advisory Details (2)

Auto-updated Jul 21, 2026
Patch available. Sources: redhat.
redhat Patch Available

2500849 – (CVE-2026-15811) CVE-2026-15811 kronosnet: kronosnet: encryption key exposure in memory after cryptographic configuration changes

https://bugzilla.redhat.com/show_bug.cgi?id=2500849
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-15811

Vendor Advisories for CVE-2026-15811(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
kronosnet1.20-4 ... 1.33-1 (18 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
kronosnet1.25-1 ... 1.33-1 (11 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
kronosnet1.31-1, 1.32-1, 1.33-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
kronosnet1.31-1, 1.32-1, 1.33-1——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 48× 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.

  1. 2026-09-11 14:52 UTCEPSS rescore
  2. 2026-09-11 09:36 UTCEPSS rescore
  3. 2026-09-11 09:15 UTCEG score recompute
  4. 2026-09-11 09:15 UTCGHSA enrichment
  5. 2026-09-10 09:34 UTCEPSS rescore
  6. 2026-09-09 11:42 UTCEG score recompute
  7. 2026-09-09 11:42 UTCGHSA enrichment
  8. 2026-09-08 22:00 UTCEPSS rescore
  9. 2026-09-07 22:45 UTCEG score recompute
  10. 2026-09-07 22:45 UTCGHSA enrichment
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-06 11:21 UTCEG score recompute
  13. 2026-09-06 11:21 UTCGHSA enrichment
  14. 2026-09-05 09:15 UTCEG score recompute
  15. 2026-09-05 09:15 UTCGHSA enrichment
  16. 2026-09-04 05:06 UTCEPSS rescore
  17. 2026-09-02 01:00 UTCEG score recompute
  18. 2026-09-02 01:00 UTCGHSA enrichment
  19. 2026-09-01 13:53 UTCEPSS rescore
  20. 2026-09-01 04:39 UTCEPSS rescore
  21. 2026-08-31 02:42 UTCGHSA enrichment
  22. 2026-08-30 02:25 UTCGHSA enrichment
  23. 2026-08-27 15:13 UTCGHSA enrichment
  24. 2026-08-26 14:57 UTCGHSA enrichment
  25. 2026-08-25 14:31 UTCEG score recompute
Show 55 more
  1. 2026-08-25 14:31 UTCGHSA enrichment
  2. 2026-08-25 13:48 UTCEPSS rescore
  3. 2026-08-24 14:11 UTCGHSA enrichment
  4. 2026-08-23 13:53 UTCEG score recompute
  5. 2026-08-23 13:53 UTCGHSA enrichment
  6. 2026-08-23 00:19 UTCEPSS rescore
  7. 2026-08-22 13:37 UTCGHSA enrichment
  8. 2026-08-21 13:21 UTCEG score recompute
  9. 2026-08-21 13:21 UTCGHSA enrichment
  10. 2026-08-21 13:09 UTCEG score recompute
  11. 2026-08-21 13:09 UTCGHSA enrichment
  12. 2026-08-21 11:42 UTCGHSA enrichment
  13. 2026-08-20 11:26 UTCEG score recompute
  14. 2026-08-20 11:26 UTCGHSA enrichment
  15. 2026-08-19 11:08 UTCGHSA enrichment
  16. 2026-08-18 10:51 UTCGHSA enrichment
  17. 2026-08-17 10:35 UTCGHSA enrichment
  18. 2026-08-16 10:18 UTCGHSA enrichment
  19. 2026-08-15 10:03 UTCGHSA enrichment
  20. 2026-08-14 09:47 UTCEG score recompute
  21. 2026-08-14 09:47 UTCGHSA enrichment
  22. 2026-08-13 22:00 UTCEPSS rescore
  23. 2026-08-13 09:31 UTCGHSA enrichment
  24. 2026-08-12 09:15 UTCGHSA enrichment
  25. 2026-08-11 08:59 UTCGHSA enrichment
  26. 2026-08-10 08:43 UTCGHSA enrichment
  27. 2026-08-09 08:28 UTCGHSA enrichment
  28. 2026-08-08 08:12 UTCGHSA enrichment
  29. 2026-08-07 07:56 UTCGHSA enrichment
  30. 2026-08-06 07:40 UTCEG score recompute
  31. 2026-08-06 07:40 UTCGHSA enrichment
  32. 2026-08-05 19:17 UTCEPSS rescore
  33. 2026-08-05 07:24 UTCGHSA enrichment
  34. 2026-08-04 07:05 UTCGHSA enrichment
  35. 2026-08-03 06:46 UTCGHSA enrichment
  36. 2026-08-02 06:24 UTCGHSA enrichment
  37. 2026-08-01 06:07 UTCGHSA enrichment
  38. 2026-07-31 05:50 UTCEG score recompute
  39. 2026-07-31 05:50 UTCGHSA enrichment
  40. 2026-07-30 05:34 UTCGHSA enrichment
  41. 2026-07-29 05:17 UTCGHSA enrichment
  42. 2026-07-28 05:01 UTCGHSA enrichment
  43. 2026-07-27 04:41 UTCEG score recompute
  44. 2026-07-27 04:41 UTCGHSA enrichment
  45. 2026-07-26 04:24 UTCEG score recompute
  46. 2026-07-26 04:24 UTCGHSA enrichment
  47. 2026-07-24 14:17 UTCEPSS rescore
  48. 2026-07-23 03:05 UTCEG score recompute
  49. 2026-07-22 23:20 UTCEG score recompute
  50. 2026-07-22 23:20 UTCGHSA enrichment
  51. 2026-07-21 15:24 UTCEPSS rescore
  52. 2026-07-21 06:49 UTCEG score recompute
  53. 2026-07-21 06:49 UTCGHSA enrichment
  54. 2026-07-21 05:44 UTCEG score recompute
  55. 2026-07-21 05:43 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-15811?
CVE-2026-15811 is a medium vulnerability published on July 21, 2026. A vulnerability was found in kronosnet's (version <=1.34) cryptographic configuration management. The framework does not correctly zero-out or wipe sensitive memory segments after executing changes to its cryptographic configuration. This omission leaves raw encryption keys resident in memory after…
When was CVE-2026-15811 disclosed?
CVE-2026-15811 was first published in the National Vulnerability Database on July 21, 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-2026-15811 actively exploited?
CVE-2026-15811 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 99.7% of all scored CVEs.
What is the CVSS score of CVE-2026-15811?
CVE-2026-15811 has a CVSS v3 base score of 5.8 (NVD).
How do I remediate CVE-2026-15811?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15811, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-15811

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