CVE-2008-3821

Multiple cross-site scripting (XSS) vulnerabilities in the HTTP server in Cisco IOS 11.0 through...

4.3 MediumPublic exploit

Multiple cross-site scripting (XSS) vulnerabilities in the HTTP server in Cisco IOS 11.0 through 12.4 allow remote attackers to inject arbitrary web script or HTML via (1) the query string to the ping program or (2) unspecified other aspects of the URI.

Exploit likelihood

5.45%Down 0.2 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2008-3821
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

Record: CVE-2008-3821
Updated: 2026-11-02

EUVDEUVD-2008-3807 No score

Record: EUVD-2008-3807
Updated: 2026-11-03

GitHub AdvisoriesGHSA-xrr6-c8rc-c2wp No score

Multiple cross-site scripting (XSS) vulnerabilities in the HTTP server in Cisco IOS 11.0 through...

Record: GHSA-xrr6-c8rc-c2wp
Weakness: CWE-79
Updated: 2026-11-02

Affected products

cisco ios

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Cisco IOS 12.x - HTTP Server Multiple Cross-Site Scripting Vulnerabilities	2009-01-14

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2008-3821 is a medium vulnerability (CVSS 4.3) in Cisco Ios, published January 16, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 5.45%, the 92nd percentile. No source names a fixed version.

References

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