CVE-2009-2973

CVE-2009-2973 is a medium-severity vulnerability in Google Chrome with a CVSS 2.0 base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-310.

Key facts

• Severity: Medium (CVSS 2.0 base score 6.4)
• EPSS exploit prediction: 1% (56th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-310
• Affected product: Google Chrome
• Published: 2009-08-27
• Last modified: 2026-06-16

Description

Google Chrome before 2.0.172.43 does not prevent SSL connections to a site with an X.509 certificate signed with the (1) MD2 or (2) MD4 algorithm, which makes it easier for man-in-the-middle attackers to spoof arbitrary HTTPS servers via a crafted certificate, a related issue to CVE-2009-2409.

Frequently asked questions

What is CVE-2009-2973?

Google Chrome before 2.0.172.43 does not prevent SSL connections to a site with an X.509 certificate signed with the (1) MD2 or (2) MD4 algorithm, which makes it easier for man-in-the-middle attackers to spoof arbitrary HTTPS servers via a crafted certificate, a related issue to CVE-2009-2409.

How severe is CVE-2009-2973?

CVE-2009-2973 has a CVSS 2.0 base score of 6.4, rated medium severity.

Is CVE-2009-2973 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2973?

CVE-2009-2973 primarily affects Google Chrome. In total, 30 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2973?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-2973 published?

CVE-2009-2973 was published on 2009-08-27 and last updated on 2026-06-16.

References

• http://code.google.com/p/chromium/issues/detail?id=18725
• http://googlechromereleases.blogspot.com/2009/08/stable-update-security-fixes.html
• http://secunia.com/advisories/36417
• http://www.vupen.com/english/advisories/2009/2420
• https://exchange.xforce.ibmcloud.com/vulnerabilities/52903

Affected products (30)

• cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:0.2.149.27:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:0.2.149.29:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:0.2.149.30:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:0.2.152.1:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:0.2.153.1:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:0.3.154.0:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:0.3.154.3:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:0.4.154.18:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:0.4.154.22:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:0.4.154.31:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:0.4.154.33:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:1.0.154.36:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:1.0.154.39:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:1.0.154.42:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:1.0.154.43:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:1.0.154.46:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:1.0.154.48:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:1.0.154.52:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:1.0.154.53:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:1.0.154.59:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:2.0.156.1:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:2.0.157.0:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:2.0.157.2:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:2.0.158.0:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:2.0.159.0:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:2.0.172:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:2.0.172.30:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:2.0.172.31:*:*:*:*:*:*:*
• cpe:2.3:a:google:chrome:2.0.172.33:*:*:*:*:*:*:*

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