UpHeron
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Servers and applications

CVE-2026-28388

Issue summary: When a delta CRL that contains a Delta CRL Indicator extension is processed a NULL pointer dereference might happen if the required CRL Number extension is missing. Impact summary: A NULL pointer dereference can trigger a crash which leads to a Denial of Service for an application. When CRL processing and delta CRL processing is enabled during X.509 certificate verification, the…

Severity
High 7.5
Published
7 Apr 2026
Last changed
24 Jul 2026
Added to UpHeron
21 Oct 2026
Fixed in
1.1.1zg, 3.0.20, 3.3.7, 3.4.5, 3.5.6, 3.6.2
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSLServers and applications · cpe:a:openssl:openssl
  • From 3.6.0 before 3.6.2
  • From 3.5.0 before 3.5.6
  • From 3.4.0 before 3.4.5
  • From 3.3.0 before 3.3.7
All 7 release lines
  • From 1.0.2 before 1.0.2zp
  • From 1.1.1 before 1.1.1zg
  • From 3.0.0 before 3.0.20
  • From 3.3.0 before 3.3.7
  • From 3.4.0 before 3.4.5
  • From 3.5.0 before 3.5.6
  • From 3.6.0 before 3.6.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-28388
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-28388