Is CVE-2015-0653 in the CISA KEV catalog?

No. CVE-2015-0653 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-0653?

CVE-2015-0653 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2015-0653?

CVE-2015-0653 has an EPSS score of 4.34% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-0653?

Upgrade expressway software to x8.2.2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2015-0653

HIGHEPSS 90th pctl

10.0

CVSS v2

NVD

Description

The management interface in Cisco TelePresence Video Communication Server (VCS) and Cisco Expressway before X7.2.4, X8 before X8.1.2, and X8.2 before X8.2.2 and Cisco TelePresence Conductor before X2.3.1 and XC2.4 before XC2.4.1 allows remote attackers to bypass authentication via crafted login parameters, aka Bug IDs CSCur02680 and CSCur05556.

CWE-287Improper Authentication

How to fix

Remediation Available

expressway softwareNVD

Affected:>= x8.2, < x8.2.2Fixed in:x8.2.2CVE-2015-0653derived from NVD

telepresence conductorNVD

Affected:>= xc2.4, < xc2.4.1Fixed in:xc2.4.1CVE-2015-0653derived from NVD

telepresence video communication server softwareNVD

Affected:>= x8.2, < x8.2.2Fixed in:x8.2.2CVE-2015-0653derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

4.34%probability of exploitation in 30 days

90thpercentile

High risk: more likely to be exploited than 90% of all known CVEs.

References

Vendor Advisory1

tools.cisco.com

Third-Party Advisory1

securitytracker.com

Related Vulnerabilities

Other CWE-287 (Improper Authentication) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-35082	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-35078	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2017-7921	Critical	9.8	100%	KEV	-
CVE-2024-7593	Critical	9.8	100%	KEV	-
CVE-2023-46805	High	8.2	100%	KEV + Ransom	-
CVE-2022-40684	Critical	9.8	100%	KEV + Ransom	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.