CRITICALCVSS 10.0Actively exploited · CISA KEV since 2025-12-17Vulnerability

CVE-2025-20393

Cisco Secure Email Gateway, Secure Email, AsyncOS Software, and Web Manager appliances contains an improper input validation vulnerability that allows threat actors to execute arbitrary commands with root privileges on the underlying operating system of an affected appliance.

Properties

Euvd product
Cisco Secure Email and Web Manager, Cisco Secure Email
Vulnerability name
Cisco Multiple Products Improper Input Validation Vulnerability
First seen
2026-10-07T19:22:07+00:00
Cvss score
10
Epss score
0.32392
Last seen
2026-10-19T12:00:27+00:00
Due date
2025-12-24
Euvd assigner
cisco
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2025-12-17T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2025-12-17
Score
10
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Cisco
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
10

Related Entities (24 · showing 23)

AFFECTS_PRODUCT (21 · showing 20)

→[Product]cpe:2.3:h:cisco:secure_email_and_web_manager_m695:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_and_web_manager_m390x:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_gateway_c395:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_and_web_manager_m195:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m100v:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_and_web_manager_m680:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_gateway_c195:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_gateway_c695:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_and_web_manager_m395:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_and_web_manager_m690x:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_and_web_manager_m380:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_and_web_manager_m390:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c100v:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c600v:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m600v:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_and_web_manager_m190:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_email_and_web_manager_virtual_appliance_m300v:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c300v:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:secure_email_and_web_manager_m690:-:*:*:*:*:*:*:*

DESCRIBES (1)

←[KEVEntry]Cisco Multiple Products Improper Input Validation Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Improper Input Validation

INVOLVES (1)

←[Signal]kev_added · 2025-12-17

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CVE-2025-20393 (CVSS 10) — Ninja Signal Threat Intelligence | Ninja Signal