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Vulnerability record · CVE-2017-3839 · published 22 February 2017

CVE-2017-3839: Cisco secure access control system xml external entity (xxe) vulnerability

Cisco · Secure Access Control System

An XML External Entity vulnerability in the web-based user interface of the Cisco Secure Access Control System (ACS) could allow an unauthenticated, remote attacker to have read access to part of the information stored in the affected system. More Information: CSCvc04845. Known Affected Releases: 5.8(2.5).

4.3 CVSS 3.0 Medium EPSS 1.6% · top 25.9% CWE-611 · XML external entity (XXE)
4.3CVSS 3.0 base score, v2 4.0
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

An XML External Entity vulnerability in the web-based user interface of the Cisco Secure Access Control System (ACS) could allow an unauthenticated, remote attacker to have read access to part of the information stored in the affected system. More Information: CSCvc04845. Known Affected Releases: 5.8(2.5).

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/96236
http://www.securitytracker.com/id/1037836
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170215-acs1 Vendor Advisory
http://www.securityfocus.com/bid/96236
http://www.securitytracker.com/id/1037836
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170215-acs1 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-3839), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.