Is CVE-2009-2409 in the CISA KEV catalog?

No. CVE-2009-2409 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-2409?

CVE-2009-2409 has a CVSS v2 base score of 5.1 (MEDIUM).

What is the EPSS score for CVE-2009-2409?

CVE-2009-2409 has an EPSS score of 4.51% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-2409?

Upgrade nss on debian 11 to 3.12.3-1 or later.

CVE & CISA-KEV Catalog

CVE-2009-2409

MEDIUMEPSS 90th pctl

5.1

CVSS v2

NVD

Description

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.

CWE-295Improper Certificate Validation

How to fix

Remediation Available

nssDebian

Fixed in:3.12.3-1CVE-2009-2409

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

4.51%probability of exploitation in 30 days

90thpercentile

High risk: more likely to be exploited than 90% of all known CVEs.

References

Patch1

java.sun.com

Vendor Advisory7

Third-Party Advisory11

Mailing List1

debian.org

Release Notes1

java.sun.com

Other references16

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.