UpHeron
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Servers and applications

CVE-2001-0361

Implementations of SSH version 1.5, including (1) OpenSSH up to version 2.3.0, (2) AppGate, and (3) ssh-1 up to version 1.2.31, in certain configurations, allow a remote attacker to decrypt and/or alter traffic via a "Bleichenbacher attack" on PKCS#1 version 1.5.

Severity
Medium 4.0
Published
27 Jun 2001
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
2.5% in the next 30 daysHigher than 84% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-310
Attack
Over the network · Only under certain conditions · No login needed
Attacker can
Read some data · Change some data
CVSS vector
AV:N/AC:H/Au:N/C:P/I:P/A:N
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSHServers and applications · cpe:a:openbsd:openssh
  • Version 1.2.3
  • Version 2.1
  • Version 2.1.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2001-0361
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2001-0361