How severe is CVE-2013-5663?

CVE-2013-5663 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2013-5663 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-5663?

CVE-2013-5663 primarily affects Paloaltonetworks Pan-os. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-5663?

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

When was CVE-2013-5663 published?

CVE-2013-5663 was published on 2013-08-31 and last updated on 2026-06-16.

CVE-2013-5663

CVE-2013-5663 is a medium-severity vulnerability in Paloaltonetworks Pan-os 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: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Paloaltonetworks Pan-os
Published: 2013-08-31
Last modified: 2026-06-16

Description

The App-ID cache feature in Palo Alto Networks PAN-OS before 4.0.14, 4.1.x before 4.1.11, and 5.0.x before 5.0.2 allows remote attackers to bypass intended security policies via crafted requests that trigger invalid caching, as demonstrated by incorrect identification of HTTP traffic as SIP traffic, aka Ref ID 47195.

Frequently asked questions

What is CVE-2013-5663?: The App-ID cache feature in Palo Alto Networks PAN-OS before 4.0.14, 4.1.x before 4.1.11, and 5.0.x before 5.0.2 allows remote attackers to bypass intended security policies via crafted requests that trigger invalid caching, as demonstrated by incorrect identification of HTTP traffic as SIP traffic, aka Ref ID 47195.
How severe is CVE-2013-5663?: CVE-2013-5663 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2013-5663 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-5663?: CVE-2013-5663 primarily affects Paloaltonetworks Pan-os. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-5663?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-5663 published?: CVE-2013-5663 was published on 2013-08-31 and last updated on 2026-06-16.

References

Affected products (23)

cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.0.0:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.0.1:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.0.2:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.0.3:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.0.4:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.0.5:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.0.6:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.0.7:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.0:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.1:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.2:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.3:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.4:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.5:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.6:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.7:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.8:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.8-h3:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.9:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:4.1.10:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:5.0.0:*:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:5.0.0-h1:*:*:*:*:*:*:*

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