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Vulnerability record · CVE-2011-0766 · published 31 May 2011

CVE-2011-0766: Erlang crypto vulnerability

Erlang · Crypto

The random number generator in the Crypto application before 2.0.2.2, and SSH before 2.0.5, as used in the Erlang/OTP ssh library before R14B03, uses predictable seeds based on the current time, which makes it easier for remote attackers to guess DSA host and SSH session keys.

7.8 CVSS 2.0 High EPSS 3.1% · top 12.8% CWE-310 · CWE-310
7.8CVSS 2.0 base score
3.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

Description

The random number generator in the Crypto application before 2.0.2.2, and SSH before 2.0.5, as used in the Erlang/OTP ssh library before R14B03, uses predictable seeds based on the current time, which makes it easier for remote attackers to guess DSA host and SSH session keys.

AV:N/AC:L/Au:N/C:C/I:N/A:N

Affected products

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

References

LinkTags
http://secunia.com/advisories/44709 Vendor Advisory
http://www.kb.cert.org/vuls/id/178990 PatchThird Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/47980 Third Party AdvisoryVDB Entry
https://github.com/erlang/otp/commit/f228601de45c5b53241b103af6616453c50885a5 Patch
http://secunia.com/advisories/44709 Vendor Advisory
http://www.kb.cert.org/vuls/id/178990 PatchThird Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/47980 Third Party AdvisoryVDB Entry
https://github.com/erlang/otp/commit/f228601de45c5b53241b103af6616453c50885a5 Patch

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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-2011-0766), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.