UpHeron
All vulnerabilities

Servers and applications

CVE-2026-42766

Issue summary: A specially crafted password-encrypted CMS message can trigger a NULL pointer dereference during CMS decryption. Impact summary: This NULL pointer dereference leads to an application crash and a Denial of Service. The CMS PasswordRecipientInfo.keyDerivationAlgorithm field is defined as OPTIONAL in the ASN.1 specification and may therefore be absent in specially crafted inputs.…

Severity
Medium 5.9
Published
9 Jun 2026
Last changed
23 Jul 2026
Added to UpHeron
21 Oct 2026
Fixed in
1.0.2zq, 1.1.1zh, 3.0.21, 3.4.6, 3.5.7, 3.6.3
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSLServers and applications · cpe:a:openssl:openssl
  • Version 4.0.0
  • From 3.6.0 before 3.6.3
  • From 3.5.0 before 3.5.7
  • From 3.4.0 before 3.4.6
All 7 release lines
  • From 1.0.2 before 1.0.2zq
  • From 1.1.1 before 1.1.1zh
  • From 3.0.0 before 3.0.21
  • From 3.4.0 before 3.4.6
  • From 3.5.0 before 3.5.7
  • From 3.6.0 before 3.6.3
  • Version 4.0.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-42766
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-42766