SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2010-1575

The Cisco Content Services Switch (CSS) 11500 with software 08.20.1.01 conveys authentication data through ClientCert-* headers but does not delete client-supplied ClientCert-* headers, which might allow remote attackers to bypass authentication via…

HIGH 7.5EPSS 1.69%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The Cisco Content Services Switch (CSS) 11500 with software 08.20.1.01 conveys authentication data through ClientCert-* headers but does not delete client-supplied ClientCert-* headers, which might allow remote attackers to bypass authentication via crafted header data, as demonstrated by a ClientCert-Subject-CN header, aka Bug ID CSCsz04690.

CVSS 2.0
7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
1.69% probability · 77th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-264
Affected
cisco/content services switch 11500
Source
psirt@cisco.com
EPSS trend
0%3%5%26 October 2026: 1.69%26 October 202626 October 2026

EPSS 1.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.