CVE-2010-2629

CVE-2010-2629 is a high-severity vulnerability in Cisco Content Services Switch 11500 with a CVSS 2.0 base score of 7.5. 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-20.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 1% (71st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Cisco Content Services Switch 11500
• Published: 2010-07-06
• Last modified: 2026-06-16

Description

The Cisco Content Services Switch (CSS) 11500 with software 8.20.4.02 and the Application Control Engine (ACE) 4710 with software A2(3.0) do not properly handle LF header terminators in situations where the GET line is terminated by CRLF, which allows remote attackers to conduct HTTP request smuggling attacks and possibly bypass intended header insertions via crafted header data, as demonstrated by an LF character between the ClientCert-Subject and ClientCert-Subject-CN headers. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-1576.

Frequently asked questions

What is CVE-2010-2629?

The Cisco Content Services Switch (CSS) 11500 with software 8.20.4.02 and the Application Control Engine (ACE) 4710 with software A2(3.0) do not properly handle LF header terminators in situations where the GET line is terminated by CRLF, which allows remote attackers to conduct HTTP request smuggling attacks and possibly bypass intended header insertions via crafted header data, as demonstrated by an LF character between the ClientCert-Subject and ClientCert-Subject-CN headers. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-1576.

How severe is CVE-2010-2629?

CVE-2010-2629 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2010-2629 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-2629?

CVE-2010-2629 primarily affects Cisco Content Services Switch 11500. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-2629?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2010-2629 published?

CVE-2010-2629 was published on 2010-07-06 and last updated on 2026-06-16.

References

• http://securitytracker.com/id?1024167
• http://securitytracker.com/id?1024168
• http://www.securityfocus.com/archive/1/512144/100/0/threaded
• http://www.securityfocus.com/bid/41315
• http://www.vsecurity.com/resources/advisory/20100702-1/

Affected products (8)

• cpe:2.3:h:cisco:content_services_switch_11500:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:content_services_switch_11500:8.20.0.01:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:content_services_switch_11500:08.20.1.01:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:content_services_switch_11500:8.20.1.01:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:content_services_switch_11500:8.20.2.01:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ace_4710:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ace_4710:a1\(2.0\):*:*:*:*:*:*:*
• cpe:2.3:h:cisco:ace_4710:a1\(8.0\):*:*:*:*:*:*:*

More vulnerabilities in Cisco Content Services Switch 11500

• CVE-2010-1576 — High (CVSS 7.5): The Cisco Content Services Switch (CSS) 11500 with software before 8.20.4.02 and the Application Control Engine (ACE)…
• CVE-2010-1575 — High (CVSS 7.5): The Cisco Content Services Switch (CSS) 11500 with software 08.20.1.01 conveys authentication data through ClientCert-*…
• CVE-2004-0079 — High (CVSS 7.5): The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause…
• CVE-2006-1631 — Medium (CVSS 5.0): Unspecified vulnerability in the HTTP compression functionality in Cisco CSS 11500 Series Content Services switches…
• CVE-2005-3426 — Medium (CVSS 5.0): Cisco CSS 11500 Content Services Switch (CSS) with SSL termination services allows remote attackers to cause a denial…
• CVE-2005-0356 — Medium (CVSS 5.0): Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with the timestamps option enabled…

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