How severe is CVE-2011-3318?

CVE-2011-3318 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2011-3318 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3318?

CVE-2011-3318 primarily affects Cisco Video Surveillance 2421. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3318?

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-2011-3318 published?

CVE-2011-3318 was published on 2011-10-27 and last updated on 2026-06-16.

CVE-2011-3318

CVE-2011-3318 is a high-severity vulnerability in Cisco Video Surveillance 2421 with a CVSS 2.0 base score of 7.8. 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-399.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Video Surveillance 2421
Published: 2011-10-27
Last modified: 2026-06-16

Description

Cisco Video Surveillance 2421 and 2500 series cameras with software 1.1.x and 2.x before 2.4.0 and Video Surveillance 2600 series cameras with software before 4.2.0-13 allow remote attackers to cause a denial of service (device reload) by sending crafted RTSP packets over TCP, aka Bug IDs CSCtj96312, CSCtj39462, and CSCtl80175.

Frequently asked questions

What is CVE-2011-3318?: Cisco Video Surveillance 2421 and 2500 series cameras with software 1.1.x and 2.x before 2.4.0 and Video Surveillance 2600 series cameras with software before 4.2.0-13 allow remote attackers to cause a denial of service (device reload) by sending crafted RTSP packets over TCP, aka Bug IDs CSCtj96312, CSCtj39462, and CSCtl80175.
How severe is CVE-2011-3318?: CVE-2011-3318 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2011-3318 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3318?: CVE-2011-3318 primarily affects Cisco Video Surveillance 2421. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3318?: 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-2011-3318 published?: CVE-2011-3318 was published on 2011-10-27 and last updated on 2026-06-16.

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20111026-camera

Affected products (16)

cpe:2.3:h:cisco:video_surveillance_2421:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:video_surveillance_2500:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:2.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:2.1.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:2.1.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:2.1.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:2.1.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:2.1.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:2.3.1:*:*:*:*:*:*:*
cpe:2.3:h:cisco:video_surveillance_2600:-:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:video_surveillance_software:4.0.1:*:*:*:*:*:*:*

Other CWE-399 (Resource Management Errors) vulnerabilities

CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

Browse all CWE-399 (Resource Management Errors) vulnerabilities →