Medium 5.8Published Dec 15, 2009

CVE-2009-4034PostgreSQL 7.4.x before 7.4.27, 8.0.x before 8.0.23, 8.1.x before 8.1.19, 8.2.x before 8.2.15, 8.3.x before 8.3.9, and 8.4.x before 8.4.2 does not properly handle a '\0' character in a domain name in…

Updated under an hour ago (Nov 2, 2026, 12:20 AM ET)

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No exploitation reported and no EPSS estimate yet.

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PostgreSQL 7.4.x before 7.4.27, 8.0.x before 8.0.23, 8.1.x before 8.1.19, 8.2.x before 8.2.15, 8.3.x before 8.3.9, and 8.4.x before 8.4.2 does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based PostgreSQL servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended client-hostname restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

CVSS: 5.8 MEDIUM (v2.0, NVD)AV:N/AC:M/Au:N/C:N/I:P/A:P
Weakness (CWE): CWE-310
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

postgresql postgresql postgresql:postgresql	7.4.1; 7.4.2; 7.4.3; 7.4.4; 7.4.5; 7.4.6; 7.4.7; 7.4.8; and 84 more ranges	NVD

References

References

http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00007.html
http://marc.info/?l=bugtraq&m=134124585221119&w=2
http://osvdb.org/61038
http://secunia.com/advisories/37663
http://wiki.rpath.com/wiki/Advisories:rPSA-2010-0012
http://www.mandriva.com/security/advisories?name=MDVSA-2009:333
http://www.postgresql.org/docs/current/static/release-7-4-27.html	patch, vendor-advisory
http://www.postgresql.org/docs/current/static/release-8-0-23.html	patch, vendor-advisory
http://www.postgresql.org/docs/current/static/release-8-1-19.html	patch, vendor-advisory
http://www.postgresql.org/docs/current/static/release-8-2-15.html	patch, vendor-advisory
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