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
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.9Exploit: None knownExposed services: Not assessed

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
5.9MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100

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
Severity59% × 45%
Exploitation1% × 40%
Automatability30% × 15%
EPSS PROB
0.4%
EPSS %ILE
34th
KEV
Not listed

Published

June 9, 2026

Last Modified

July 23, 2026

Advisory Details (6)

Auto-updated Jun 13, 2026
Patch available. 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(17)

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

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuopenssl-provider-legacy (3.5.5-1ubuntu3.2) @ resolute2026-09-14ubuntu
redhatrhui5/rhua-tp-rhel9:17872412602026-08-24redhat
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.

Affected Packages

(6 across 6 ecosystems)
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
openssl—
  • 3.0.0 up to 3.5.7-r0: fixed in 3.5.7-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
openssl—
  • 3.0.0 up to 3.5.7-r0: fixed in 3.5.7-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
openssl—
  • 3.0.0 up to 3.5.7-r0: fixed in 3.5.7-r0
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
openssl3.0.10-1 ... 3.0.9-1 (23 versions)
  • every version up to 3.0.22-1~deb12u1: fixed in 3.0.22-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
openssl3.5.1-1 ... 3.5.6-1~deb13u1 (11 versions)
  • every version up to 3.5.6-1~deb13u2: fixed in 3.5.6-1~deb13u2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
openssl3.5.1-1 ... 3.6.2-1 (22 versions)
  • every version up to 3.6.3-1: fixed in 3.6.3-1
—

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 5× in last 7d / 24× 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 257 total refreshes for this CVE.

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

Related CVEs(same product + 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 on June 9, 2026, with the most recent update on July 23, 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 0.4% probability of exploitation in the next 30 days (34th percentile of EPSS-scored CVEs).
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?
A fix for CVE-2026-42767 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-42767 are linked in the Vendor Advisories panel on this page.

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