CVE-2026-42767

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2026-06-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.9Exploit: NoneExposed: 0

A fix is available — apply it.

Issue summary: An attacker-controlled CMP (Certificate Management Protocol) server could trigger a NULL pointer dereference in a CMP client application.

Impact summary: A NULL pointer dereference causes a crash of the application and a Denial of Service.

An attacker controlling a CMP server (or acting as a man-in-the-middle) could craft a CMP response containing a CRMF (Certificate Request Message Format) CertRepMessage with an EncryptedValue structure where the symmAlg field has an algorithm OID but no parameters field. When the OpenSSL CMP client processes this response, the NULL dereference occurs, causing a crash of the CMP client.

Applications that process untrusted CMP/CRMF messages may be affected.

The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
—
EPSS
27.3%
KEV
Not listed

Published

June 9, 2026

Last Modified

June 16, 2026

Advisory Details (6)

Auto-updated Jun 13, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic
https://openssl-library.org/news/secadv/20260609.txt
github_commit

commit e6f912907fc2 (openssl/openssl)

Fix landed in openssl/openssl commit e6f912907fc2 — awaiting tagged release

https://github.com/openssl/openssl/commit/e6f912907fc2ec82a0fd07aae55172c5e5e3d90d
github_commit

commit b90ff3b1bd33 (openssl/openssl)

Fix landed in openssl/openssl commit b90ff3b1bd33 — awaiting tagged release

https://github.com/openssl/openssl/commit/b90ff3b1bd33b1c18e6a09936d097c2eddef8873
github_commit

commit 810b722f7726 (openssl/openssl)

Fix landed in openssl/openssl commit 810b722f7726 — awaiting tagged release

https://github.com/openssl/openssl/commit/810b722f772652ad48042bcc7ab07e3414b11d0f
github_commit

commit 665d5254083a (openssl/openssl)

Fix landed in openssl/openssl commit 665d5254083a — awaiting tagged release

https://github.com/openssl/openssl/commit/665d5254083affde9982efca7c41dd01cacc8774
github_commit

commit 61a86a8cd735 (openssl/openssl)

Fix landed in openssl/openssl commit 61a86a8cd735 — awaiting tagged release

https://github.com/openssl/openssl/commit/61a86a8cd73546c9fea916f3d304c1293e05c046

Vendor Advisories for CVE-2026-42767(7)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuopenssl-provider-legacy (3.5.5-1ubuntu3.2) @ resolute2026-07-16ubuntu
redhatinsights-proxy/insights-proxy-container-rhel9:17828905032026-07-01redhat
redhatdiscovery/discovery-ui-rhel9:17821669522026-06-24redhat
redhatrhui5/rhua-rhel9:17815257392026-06-16redhat
redhatopenssl-1:3.5.5-4.el10_22026-06-11redhat
redhatopenssl-1:3.5.5-4.el9_82026-06-11redhat

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.

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 9× in last 7d / 72× 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 113 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-42767?
CVE-2026-42767 is a medium vulnerability published on June 9, 2026. Issue summary: An attacker-controlled CMP (Certificate Management Protocol) server could trigger a NULL pointer dereference in a CMP client application. Impact summary: A NULL pointer dereference causes a crash of the application and a Denial of Service. An attacker controlling a CMP server (or…
When was CVE-2026-42767 disclosed?
CVE-2026-42767 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42767 actively exploited?
CVE-2026-42767 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42767?
CVE-2026-42767 has a CVSS v3.1 base score of 5.9 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-42767?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42767, 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.

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