Medium [CVE-2026-20172] Cisco Enterprise Chat and Email Lite Agent File Upload Vulnerability
This medium-severity Cisco advisory covers CVE-2026-20172 affecting Enterprise Chat and Email.
Android app · Google Play
Monitor future Cisco CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.
Summary
A vulnerability in the Lite Agent feature of Cisco Enterprise Chat and Email (ECE) could allow an authenticated, remote attacker to conduct browser-based attacks. To exploit this vulnerability, the attacker must have valid credentials for a user account with at least the role of Agent.
This vulnerability is due to inadequate validation of file contents during file upload operations. An attacker could exploit this vulnerability by uploading a file that contains malicious scripts or HTML code, which the application could make available to other users to access.
A successful exploit could allow the attacker to execute the contents of that file in the browser of a user and conduct browser-based attacks.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
- Scope: At the time of publication, this vulnerability affected Cisco ECE if the Lite Agent was enabled.
- 12 and earlier — Migrate to a fixed release
- Release 15 (first fixed: 15.0(1)ES202603)
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- 15.0(1)ES202603
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
- Release 12 and earlier: migrate to a fixed release.
- Release 15: upgrade to 15.0(1)ES202603.
- There are no workarounds that address this vulnerability.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.