How severe is CVE-2015-0644?

CVE-2015-0644 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2015-0644 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-0644?

CVE-2015-0644 primarily affects Cisco Ios Xe. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-0644?

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-2015-0644 published?

CVE-2015-0644 was published on 2015-03-26 and last updated on 2026-06-17.

CVE-2015-0644

CVE-2015-0644 is a high-severity vulnerability in Cisco Ios Xe 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-20.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Ios Xe
Published: 2015-03-26
Last modified: 2026-06-17

Description

AppNav in Cisco IOS XE 3.8 through 3.10 before 3.10.3S, 3.11 before 3.11.3S, 3.12 before 3.12.1S, 3.13 before 3.13.0S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S allows remote attackers to execute arbitrary code or cause a denial of service (device reload) via a crafted TCP packet, aka Bug ID CSCuo53622.

Frequently asked questions

What is CVE-2015-0644?: AppNav in Cisco IOS XE 3.8 through 3.10 before 3.10.3S, 3.11 before 3.11.3S, 3.12 before 3.12.1S, 3.13 before 3.13.0S, 3.14 before 3.14.0S, and 3.15 before 3.15.0S allows remote attackers to execute arbitrary code or cause a denial of service (device reload) via a crafted TCP packet, aka Bug ID CSCuo53622.
How severe is CVE-2015-0644?: CVE-2015-0644 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2015-0644 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-0644?: CVE-2015-0644 primarily affects Cisco Ios Xe. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-0644?: 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-2015-0644 published?: CVE-2015-0644 was published on 2015-03-26 and last updated on 2026-06-17.

References

Affected products (15)

cpe:2.3:o:cisco:ios_xe:3.8s.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.8s.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.8s.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.8s_base:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.9s.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.9s.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.9s.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10s.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10s.0a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10s.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.10s.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.11s.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.11s.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.11s.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.12s.0:*:*:*:*:*:*:*

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