CVE-2011-0393: n/a vulnerability

CVE-2011-0393: Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 7.0 before 7.0(8.12), 7.1 and 7....

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 21:51 UTC (UTC+00:00)

Security readout for executives and security teams

Certain legacy Cisco ASA 5500 and PIX 500 firewalls can be knocked offline by IPv6 traffic when operating in transparent firewall mode without IPv6 configured. The business impact is availability: a vulnerable security appliance could exhaust packet buffers and stop passing traffic, causing an outage. Exposure is most likely in legacy Cisco ASA 5500 or PIX 500 deployments still running affected software and configured for transparent firewall mode. Risk requires IPv6 traffic to reach the device while IPv6 is not configured. Treat as a targeted legacy-infrastructure availability risk. Escalate quickly if affected firewalls protect production network paths, internet edges, or critical segmentation points. Otherwise, handle through legacy device remediation and retirement planning. Mitigation focus: Upgrade ASA software to the fixed Cisco releases or later.; Check Cisco advisory guidance for PIX 500 remediation specifics.; Inventory transparent-mode ASA and PIX devices still in service..

Prepared: Jun 24, 2026, 13:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2011-0393 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Feb 25, 2011, 11:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
asa-packet-buffer-dos(65589)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.