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CVE-2010-1576

HIGH · CVSS 7.5EPSS 1.8%EU EUVD

The Cisco Content Services Switch (CSS) 11500 with software before 8.20.4.02 and the Application Control Engine (ACE) 4710 with software before A2(3.0) do not properly handle use of LF, CR, and LFCR as alternatives to the standard CRLF sequence between HTTP headers, which allows remote attackers to bypass intended header insertions or conduct HTTP request smuggling attacks via crafted header data, as demonstrated by LF characters preceding ClientCert-Subject and ClientCert-Subject-CN headers, aka Bug ID CSCta04885.

Key facts

CVSS score
7.5 (v2.0)
Severity
HIGH
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness (CWE)
CWE-20
EPSS score
1.8% (79th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2010-1603)
Published
July 6, 2010
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2010-1603 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • cisco / ace 4710
  • cisco / ace 4710
  • cisco / ace 4710
  • cisco / content services switch 11500
  • cisco / content services switch 11500
  • cisco / content services switch 11500
  • cisco / content services switch 11500
  • cisco / content services switch 11500

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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