CVE-2023-20232

mediumpriority · track · 21EPSS 0.005 · 46 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.55% (46th) EPSS

CVSS 5.3 · medium

Is it mine?

58 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in the Tomcat implementation for Cisco Unified Contact Center Express (Unified CCX) could allow an unauthenticated, remote attacker to cause a web cache poisoning attack on an affected device. This vulnerability is due to improper input validation of HTTP requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a specific API endpoint on the Unified CCX Finesse Portal. A successful exploit could allow the attacker to cause the internal WebProxy to redirect users to an attacker-controlled host.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Unified Contact Center Expresscisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · psirt@cisco.com USexploitability 3.9 · impact 1.4

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · Cisco PSIRT US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20US

affected products (58)

Products and version ranges known to be affected.

Cisco Cisco Unified Contact Center Expressall versionscisco_csafUS
Cisco Cisco Unified Contact Center Express≤ 11.6(2)ES05enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 12.5(1)_SU02_ES02enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 12.5(1)SU2enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 10.6(1)enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 11.0(1)SU1enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 10.6(1)SU3ES02enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 12.0(1)enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 11.6(1)enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 11.5(1)SU1enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 10.5(1)SU1enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 12.5(1)_SU01_ES02enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 10.6(1)SU2ES04enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 12.0(1)ES02enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 12.0(1)ES01enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 9.0(2)SU3ES04enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 12.5(1)SU3enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 11.6(2)ES02enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 11.6(2)enisa_euvdEU
Cisco Cisco Unified Contact Center Express≤ 10.6(1)SU3ES01enisa_euvdEU

showing 20 of 58

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-uccx-wcp-JJeqDT3SCisco Unified Contact Center Express Finesse Portal Web Cache Poisoning Vulnerability2023-08-16csaf · cisco_csafUS
A vulnerability in the Tomcat implementation for Cisco Unified Contact Center Express (Unified CCX) could allow an unauthenticated, remote attacker to cause a web cache poisoning attack on an affected device. This vulnerability is due to improper input validation of HTTP requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a specific API endpoint on the Unified CCX Finesse Portal. A successful exploit could allow the attacker to cause the internal WebProxy to redirect users to an attacker-controlled host. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf NVD CVE.org MITRE

published 2023-08-16modified 2026-06-17

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+25188 more

references (4)

External citations — patches, advisories, analysis.

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