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Vulnerability record · CVE-2001-0361 · published 27 June 2001

CVE-2001-0361: Openbsd openssh vulnerability

Openbsd · Openssh

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.

4.0 CVSS 2.0 Medium EPSS 2.5% · top 15.9% CWE-310 · CWE-310
4.0CVSS 2.0 base score
2.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
20References
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:H/Au:N/C:P/I:P/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:24.ssh.asc
http://marc.info/?l=bugtraq&m=98158450021686&w=2
http://www.ciac.org/ciac/bulletins/l-047.shtml
http://www.debian.org/security/2001/dsa-023
http://www.debian.org/security/2001/dsa-027
http://www.debian.org/security/2001/dsa-086
http://www.novell.com/linux/security/advisories/adv004_ssh.html
http://www.osvdb.org/2116
http://www.securityfocus.com/bid/2344 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/6082
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:24.ssh.asc
http://marc.info/?l=bugtraq&m=98158450021686&w=2
http://www.ciac.org/ciac/bulletins/l-047.shtml
http://www.debian.org/security/2001/dsa-023
http://www.debian.org/security/2001/dsa-027
http://www.debian.org/security/2001/dsa-086
http://www.novell.com/linux/security/advisories/adv004_ssh.html
http://www.osvdb.org/2116
http://www.securityfocus.com/bid/2344 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/6082

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2001-0361), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.