How severe is CVE-2011-0395?

CVE-2011-0395 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2011-0395 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0395?

CVE-2011-0395 primarily affects Cisco Adaptive Security Appliance. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0395?

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-2011-0395 published?

CVE-2011-0395 was published on 2011-02-25 and last updated on 2026-06-16.

CVE-2011-0395

CVE-2011-0395 is a high-severity vulnerability in Cisco Adaptive Security Appliance 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: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Adaptive Security Appliance
Published: 2011-02-25
Last modified: 2026-06-16

Description

Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.0 before 8.0(5.20), 8.1 before 8.1(2.48), 8.2 before 8.2(3), and 8.3 before 8.3(2.1), when the RIP protocol and the Cisco Phone Proxy functionality are configured, allow remote attackers to cause a denial of service (device reload) via a RIP update, aka Bug ID CSCtg66583.

Frequently asked questions

What is CVE-2011-0395?: Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.0 before 8.0(5.20), 8.1 before 8.1(2.48), 8.2 before 8.2(3), and 8.3 before 8.3(2.1), when the RIP protocol and the Cisco Phone Proxy functionality are configured, allow remote attackers to cause a denial of service (device reload) via a RIP update, aka Bug ID CSCtg66583.
How severe is CVE-2011-0395?: CVE-2011-0395 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2011-0395 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0395?: CVE-2011-0395 primarily affects Cisco Adaptive Security Appliance. In total, 27 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-0395?: 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-2011-0395 published?: CVE-2011-0395 was published on 2011-02-25 and last updated on 2026-06-16.

References

Affected products (27)

cpe:2.3:o:cisco:adaptive_security_appliance:8.0\(2\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance:8.0\(3\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance:8.0\(4\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance:8.0\(5\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance:8.1\(1\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance:8.1\(2\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance:8.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance:8.2\(1\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance:8.2\(2\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance:8.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance_software:8.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:adaptive_security_appliance_software:8.3\(1\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5500:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5505:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5510:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5520:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5540:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5550:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asa_5580:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:pix_500:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:pix_501:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:pix_506e:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:pix_firewall_506:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:pix_firewall_515:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:pix_firewall_520:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:pix_firewall_525:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:pix_firewall_535:*:*:*:*:*:*:*:*

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