CVE-2005-3921

CVE-2005-3921 is a low-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: Low (CVSS 2.0 base score 2.6)
• EPSS exploit prediction: 3% (85th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Cisco Ios
• Published: 2005-11-30
• Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in Cisco IOS Web Server for IOS 12.0(2a) allows remote attackers to inject arbitrary web script or HTML by (1) packets containing HTML that an administrator views via an HTTP interface to the contents of memory buffers, as demonstrated by the URI /level/15/exec/-/buffers/assigned/dump; or (2) sending the router Cisco Discovery Protocol (CDP) packets with HTML payload that an administrator views via the CDP status pages. NOTE: these vectors were originally reported as being associated with the dump and packet options in /level/15/exec/-/show/buffers.

Frequently asked questions

What is CVE-2005-3921?

Cross-site scripting (XSS) vulnerability in Cisco IOS Web Server for IOS 12.0(2a) allows remote attackers to inject arbitrary web script or HTML by (1) packets containing HTML that an administrator views via an HTTP interface to the contents of memory buffers, as demonstrated by the URI /level/15/exec/-/buffers/assigned/dump; or (2) sending the router Cisco Discovery Protocol (CDP) packets with HTML payload that an administrator views via the CDP status pages. NOTE: these vectors were originally reported as being associated with the dump and packet options in /level/15/exec/-/show/buffers.

How severe is CVE-2005-3921?

CVE-2005-3921 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2005-3921 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-3921?

CVE-2005-3921 primarily affects Cisco Ios. In total, 225 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-3921?

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

When was CVE-2005-3921 published?

CVE-2005-3921 was published on 2005-11-30 and last updated on 2026-06-16.

References

• http://secunia.com/advisories/17780
• http://secunia.com/advisories/18528
• http://securityreason.com/securityalert/227
• http://securitytracker.com/id?1015275
• http://www.cisco.com/warp/public/707/cisco-sa-20051201-http.shtml
• http://www.idefense.com/intelligence/vulnerabilities/display.php?id=372
• http://www.infohacking.com/INFOHACKING_RESEARCH/Our_Advisories/cisco/index.html
• http://www.securityfocus.com/archive/1/417916/100/0/threaded
• http://www.securityfocus.com/bid/15602
• http://www.securityfocus.com/bid/16291
• http://www.vupen.com/english/advisories/2005/2657
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5867

Affected products (225)

• cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(1a\):*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)ja:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)ja5:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)jk:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)jk1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)t3:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)t8:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)xa4:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)xa5:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)xc1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)xc2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)xc3:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)xc4:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)xe3:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(2\)xe4:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(3e\):*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(3h\):*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(3i\):*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)eo1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)ja:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)ja1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)t:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)t1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)t2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)t3:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)t4:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)t8:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)tpc11a:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)xd:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)xd1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)xd2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)xe4:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)xg1:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)xg2:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)xg4:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)xg5:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)xh:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)xk:*:*:*:*:*:*:*
• cpe:2.3:o:cisco:ios:12.3\(4\)xk1:*:*:*:*:*:*:*

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