All vulnerabilities

Servers and applications

CVE-2019-1551

There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the…

Severity
Medium 5.3
Published
6 Dec 2019
Last changed
8 Oct 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSLServers and applications · cpe:a:openssl:openssl
  • From 1.0.2 up to 1.0.2t
  • From 1.1.1 up to 1.1.1d

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-1551
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-1551