How severe is CVE-2013-3463?

CVE-2013-3463 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2013-3463 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3463?

CVE-2013-3463 primarily affects Cisco Adaptive Security Appliance Software. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-3463?

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

When was CVE-2013-3463 published?

CVE-2013-3463 was published on 2013-08-30 and last updated on 2026-06-16.

CVE-2013-3463

CVE-2013-3463 is a medium-severity vulnerability in Cisco Adaptive Security Appliance Software with a CVSS 2.0 base score of 4.3. 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Cisco Adaptive Security Appliance Software
Published: 2013-08-30
Last modified: 2026-06-16

Description

The protocol-inspection feature on Cisco Adaptive Security Appliances (ASA) devices does not properly implement the idle timeout, which allows remote attackers to cause a denial of service (connection-table exhaustion) via crafted requests that use an inspected protocol, aka Bug ID CSCuh13899.

Frequently asked questions

What is CVE-2013-3463?: The protocol-inspection feature on Cisco Adaptive Security Appliances (ASA) devices does not properly implement the idle timeout, which allows remote attackers to cause a denial of service (connection-table exhaustion) via crafted requests that use an inspected protocol, aka Bug ID CSCuh13899.
How severe is CVE-2013-3463?: CVE-2013-3463 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2013-3463 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3463?: CVE-2013-3463 primarily affects Cisco Adaptive Security Appliance Software. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3463?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-3463 published?: CVE-2013-3463 was published on 2013-08-30 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:o:cisco:adaptive_security_appliance_software:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:*

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