How severe is CVE-2014-7991?

CVE-2014-7991 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2014-7991 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-7991?

CVE-2014-7991 primarily affects Cisco Unified Communications Manager. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-7991?

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

When was CVE-2014-7991 published?

CVE-2014-7991 was published on 2014-11-14 and last updated on 2026-06-17.

CVE-2014-7991

CVE-2014-7991 is a medium-severity vulnerability in Cisco Unified Communications Manager 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-310.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-310
Affected product: Cisco Unified Communications Manager
Published: 2014-11-14
Last modified: 2026-06-17

Description

The Remote Mobile Access Subsystem in Cisco Unified Communications Manager (CM) 10.0(1) and earlier does not properly validate the Subject Alternative Name (SAN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof VCS core devices via a crafted certificate issued by a legitimate Certification Authority, aka Bug ID CSCuq86376.

Frequently asked questions

What is CVE-2014-7991?: The Remote Mobile Access Subsystem in Cisco Unified Communications Manager (CM) 10.0(1) and earlier does not properly validate the Subject Alternative Name (SAN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof VCS core devices via a crafted certificate issued by a legitimate Certification Authority, aka Bug ID CSCuq86376.
How severe is CVE-2014-7991?: CVE-2014-7991 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2014-7991 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-7991?: CVE-2014-7991 primarily affects Cisco Unified Communications Manager. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-7991?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-7991 published?: CVE-2014-7991 was published on 2014-11-14 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:cisco:unified_communications_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_communications_manager:10.0:*:*:*:*:*:*:*

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