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Servers and applications

CVE-2011-0393

Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 7.0 before 7.0(8.12), 7.1 and 7.2 before 7.2(5.2), 8.0 before 8.0(5.21), 8.1 before 8.1(2.49), 8.2 before 8.2(3.6), and 8.3 before 8.3(2.7) and Cisco PIX Security Appliances 500 series devices, when transparent firewall mode is configured but IPv6 is not configured, allow remote attackers to cause a denial of service…

Severity
High 7.8
Published
25 Feb 2011
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
2.6% in the next 30 daysHigher than 85% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-399
Attack
Over the network · No login needed
Attacker can
Take it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
Sources
NVD

Description

Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 7.0 before 7.0(8.12), 7.1 and 7.2 before 7.2(5.2), 8.0 before 8.0(5.21), 8.1 before 8.1(2.49), 8.2 before 8.2(3.6), and 8.3 before 8.3(2.7) and Cisco PIX Security Appliances 500 series devices, when transparent firewall mode is configured but IPv6 is not configured, allow remote attackers to cause a denial of service (packet buffer exhaustion and device outage) via IPv6 traffic, aka Bug ID CSCtj04707.

From NVD.

Affected software

SoftwareAffected versions
Cisco ASA and Firepower Threat DefenseServers and applications · cpe:o:cisco:adaptive_security_appliance_software
  • Version 8.2.2-interim
  • Version 8.2.2
  • Version 8.2.1
  • Version 8.2(4)
All 60 release lines
  • Every version up to 8.3\(1\)
  • Version 7.0
  • Version 7.0(0)
  • Version 7.0(2)
  • Version 7.0(4)
  • Version 7.0(5)
  • Version 7.0(5.2)
  • Version 7.0(6.7)
  • Version 7.0.1
  • Version 7.0.1.4
  • Version 7.0.2
  • Version 7.0.4
  • Version 7.0.4.3
  • Version 7.0.5
  • Version 7.0.6
  • Version 7.0.7
  • Version 7.0.8
  • Version 7.0.8-interim
  • Version 7.1
  • Version 7.1(2)
  • Version 7.1(2.5)
  • Version 7.1(2.27)
  • Version 7.1(2.48)
  • Version 7.1(2.49)
  • Version 7.1(5)
  • Version 7.1.1
  • Version 7.1.2
  • Version 7.2
  • Version 7.2(1)
  • Version 7.2(1.22)
  • Version 7.2(2)
  • Version 7.2(2.5)
  • Version 7.2(2.7)
  • Version 7.2(2.8)
  • Version 7.2(2.10)
  • Version 7.2(2.14)
  • Version 7.2(2.15)
  • Version 7.2(2.16)
  • Version 7.2(2.17)
  • Version 7.2(2.18)
  • Version 7.2(2.19)
  • Version 7.2(2.48)
  • Version 7.2.1
  • Version 7.2.2
  • Version 7.2.3
  • Version 7.2.4
  • Version 7.2.5
  • Version 8.0
  • Version 8.0.2
  • Version 8.0.3
  • Version 8.0.4
  • Version 8.0.5
  • Version 8.2(1)
  • Version 8.2(2)
  • Version 8.2(3)
  • Version 8.2(3.9)
  • Version 8.2(4)
  • Version 8.2.1
  • Version 8.2.2
  • Version 8.2.2-interim

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-0393
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-0393