CVE-2026-28390

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-04-08. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

Issue summary: During processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo a NULL pointer dereference can happen.

Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptographic operations occur resulting in Denial of Service.

When a CMS EnvelopedData message that uses KeyTransportRecipientInfo with RSA-OAEP encryption is processed, the optional parameters field of RSA-OAEP SourceFunc algorithm identifier is examined without checking for its presence. This results in a NULL pointer dereference if the field is missing.

Applications and services that call CMS_decrypt() on untrusted input (e.g., S/MIME processing or CMS-based protocols) are vulnerable.

The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
55%
KEV
Not listed

Published

April 7, 2026

Last Modified

July 24, 2026

Advisory Details (8)

Auto-updated Jul 25, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

SSA-265688

https://cert-portal.siemens.com/productcert/html/ssa-265688.html
generic

SSA-032379

https://cert-portal.siemens.com/productcert/html/ssa-032379.html
generic
https://openssl-library.org/news/secadv/20260407.txt
github_commit

commit fd2f1a6cf53b (openssl/openssl)

Fix landed in openssl/openssl commit fd2f1a6cf53b — awaiting tagged release

https://github.com/openssl/openssl/commit/fd2f1a6cf53b9ceeca723a001aa4b825d7c7ee75
github_commit

commit ea7b4ea4f9f8 (openssl/openssl)

Fix landed in openssl/openssl commit ea7b4ea4f9f8 — awaiting tagged release

https://github.com/openssl/openssl/commit/ea7b4ea4f9f853521ba34830cbcadc970d2e0788
github_commit

commit af2a5fecd3e7 (openssl/openssl)

Fix landed in openssl/openssl commit af2a5fecd3e7 — awaiting tagged release

https://github.com/openssl/openssl/commit/af2a5fecd3e71a29e7568f9c1453dec5cebbaff4
github_commit

commit 2e39b7a6993b (openssl/openssl)

Fix landed in openssl/openssl commit 2e39b7a6993b — awaiting tagged release

https://github.com/openssl/openssl/commit/2e39b7a6993be445fddb9fbce316fa756e0397b6
github_commit

commit 01194a8f1941 (openssl/openssl)

Fix landed in openssl/openssl commit 01194a8f1941 — awaiting tagged release

https://github.com/openssl/openssl/commit/01194a8f1941115cd0383bfa91c736dd3993c8bc

Vendor Advisories for CVE-2026-28390(20)

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

Patch Availability(23)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatcompat-openssl10-1:1.0.2o-3.el8_4.12026-07-28redhat
ubuntuopenssl (1.0.2g-1ubuntu4.20+esm15) @ xenial2026-07-26ubuntu
ubuntuopenssl-provider-legacy (3.5.3-1ubuntu3.3) @ questing2026-07-26ubuntu
redhatcompat-openssl10-1:1.0.2o-4.el8_6.12026-07-23redhat
redhatopenssl-1:1.1.1g-18.el8_4.32026-07-22redhat
redhatedk2-0:20251114-5.el10_2.22026-07-14redhat
redhatopenssl-1:1.1.1k-17.el8_62026-07-13redhat
redhatcompat-openssl11-1:1.1.1k-4.el9_2.22026-07-13redhat
redhatcompat-openssl11-1:1.1.1k-5.el9_4.32026-07-13redhat
redhatcompat-openssl10-1:1.0.2o-4.el8_8.12026-07-07redhat
redhatcompat-openssl11-1:1.1.1k-5.el9_6.32026-07-06redhat
redhatdiscovery/discovery-ui-rhel9:17821669522026-06-24redhat
redhatcostmanagement/costmanagement-metrics-rhel9-operator:17809462392026-06-22redhat
redhatrhui5/rhua-rhel9:17815257392026-06-16redhat
redhatansible-automation-platform-26/lightspeed-chatbot-rhel9:17801027322026-06-09redhat
redhatinsights-proxy/insights-proxy-container-rhel9:17804204282026-06-02redhat
redhatcompat-openssl11-1:1.1.1k-5.el9_8.32026-06-01redhat
redhatopenssl-1:3.5.5-3.el10_22026-06-01redhat
redhatcompat-openssl10-1:1.0.2o-4.el8_10.22026-06-01redhat
redhatopenssl-1:3.5.5-3.el9_82026-06-01redhat
redhatdiscovery/discovery-server-rhel9:17781015792026-05-07redhat
redhatopenssl-main-3.5.6-0.3.hum12026-05-06redhat
redhatopenssl-main-3.5.6-0.1.hum12026-04-09redhat

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

(9 across 9 ecosystems)
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
openssl—3.3.7-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
openssl—3.3.7-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
openssl—3.5.6-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
openssl—3.5.6-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
openssl—3.5.6-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
openssl1.1.1k-1 ... 1.1.1w-0~deb11u1 (22 versions)1.1.1w-0+deb11u7—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
openssl3.0.10-1 ... 3.0.9-1 (20 versions)3.0.19-1~deb12u2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
openssl3.5.1-1 ... 3.5.5-1~deb13u1 (8 versions)3.5.5-1~deb13u2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
openssl3.5.1-1 ... 3.6.1-3 (20 versions)3.6.2-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(8)

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 7× in last 7d / 30× 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 237 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-28390?
CVE-2026-28390 is a high vulnerability published on April 7, 2026. Issue summary: During processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptographic operations occur resulting in Denial…
When was CVE-2026-28390 disclosed?
CVE-2026-28390 was first published in the National Vulnerability Database on April 7, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-28390 actively exploited?
CVE-2026-28390 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 44.8% of all scored CVEs.
What is the CVSS score of CVE-2026-28390?
CVE-2026-28390 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-28390?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-28390, 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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