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CVE-2026-20117

24
FAUCET Score

CVE-2026-20117 identifies a cross-site scripting (XSS) vulnerability within the web-based management interface of Cisco Unified Contact Center Express (Unified CCX), caused by insufficient validation of user-supplied input. This medium-severity vulnerability (CVSS 6.1) allows an unauthenticated, remote attacker to inject malicious code, potentially executing arbitrary scripts or accessing sensitive browser information, though it requires user interaction for successful exploitation. Currently, there is no evidence of active exploitation, no public exploit code available, and community discussion or media coverage remains minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 15.0\(1\)ES01CPE matchmatch criteria
cpe:2.3:a:cisco:unified_contact_center_express:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
11.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0021 is in the 11th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

firefoxpatch availablevia llm_extracted
View patch
hanwhapatch availablevia llm_extracted
Fixed in: 1.0
View patch
haproxypatch availablevia llm_extracted
View patch
opentsdbpatch availablevia llm_extracted
Fixed in: 1.0
View patch
wiresharkpatch availablevia llm_extracted
Fixed in: 1.0
View patch
ciscovendor investigatingvia nvd_reference
View patch

Vendor Advisories (5)

firefoxllm-firefox-ec535185fa151ae8MEDIUM

Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities

Mar 11, 2026
opentsdbllm-opentsdb-f3f2cb2fe7323fe5MEDIUM

Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities

Mar 11, 2026
wiresharkllm-wireshark-a810c1cdabaecb64MEDIUM

Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities

Mar 11, 2026
hanwhallm-hanwha-5ceee06c16c2a497MEDIUM

Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities

Mar 11, 2026
haproxyllm-haproxy-fdc332297b140f82MEDIUM

Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities

Mar 11, 2026

References

sec.cloudapps.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-cc-xss-MrNAH5Jh
Vendor Advisory