All vulnerabilities

Servers and applications

CVE-2026-42771

Issue summary: When the X509_VERIFY_PARAM_set1_email is called by an application to validate a crafted e-mail address, such as during S/MIME message validation, an out of bounds read can happen. Impact summary: This out of bounds read will not directly exfiltrate the data read to the attacker so the most likely result is a crash and a Denial of Service. An internal helper function called from…

Severity
Medium 6.2
Published
9 Jun 2026
Last changed
23 Jul 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSLServers and applications · cpe:a:openssl:openssl
  • Version 4.0.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-42771
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-42771