Medium 5.1Published Jul 30, 2009

CVE-2009-2409The Network Security Services (NSS) library before 3.12.3, as used in Firefox; GnuTLS before 2.6.4 and 2.7.4; OpenSSL 0.9.8 through 0.9.8k; and other products support MD2 with X.509 certificates, whi…

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

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It affects gnutls and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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The Network Security Services (NSS) library before 3.12.3, as used in Firefox; GnuTLS before 2.6.4 and 2.7.4; OpenSSL 0.9.8 through 0.9.8k; and other products support MD2 with X.509 certificates, which might allow remote attackers to spoof certificates by using MD2 design flaws to generate a hash collision in less than brute-force time. NOTE: the scope of this issue is currently limited because the amount of computation required is still large.

CVSS: 5.1 MEDIUM (v2.0, NVD)AV:N/AC:H/Au:N/C:P/I:P/A:P
Weakness (CWE): CWE-295
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

gnu gnutls gnu:gnutls	before 2.6.4; from 2.7.0 before 2.7.4	NVD
mozilla network_security_services mozilla:network_security_services	before 3.12.3	NVD
openssl openssl openssl:openssl	from 0.9.8 through 0.9.8k	NVD

References

References

http://java.sun.com/j2se/1.5.0/ReleaseNotes.html	patch
http://java.sun.com/javase/6/webnotes/6u17.html	release-notes
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html	vendor-advisory
http://secunia.com/advisories/36139	vendor-advisory
http://secunia.com/advisories/36157	vendor-advisory
http://secunia.com/advisories/36434	vendor-advisory
http://secunia.com/advisories/36669	not-applicable
http://secunia.com/advisories/36739	not-applicable
http://secunia.com/advisories/37386	not-applicable
http://secunia.com/advisories/42467	not-applicable
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.