5.3

CVE-2026-20152: cisco cisco secure web appliance

CVSS: 5.3v3.1MediumAwaiting analysis
Published 15-04-2026Last modified 16-04-2026
Open JSON

Vulnerability summary

CVE-2026-20152 is a medium (CVSS 5.3) vulnerability in cisco cisco secure web appliance. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.2% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.30%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-04-2026
    PublishedVulnerability first disclosed.
  2. 16-04-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements. This vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

0.00 pp

From 0.30% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco1 product
  • cisco secure web appliance11.8.0-453 | 12.5.3-002 | 12.0.3-007 | 12.0.3-005 | 14.1.0-032 | 14.1.0-047 | 14.1.0-041 | 12.0.4-002 | 14.0.2-012 | 11.8.0-414 | 12.0.1-268 | 11.8.1-023 | 11.8.3-021 | 11.8.3-018 | 12.5.1-011 | 11.8.4-004 | 12.5.2-007 | 12.5.2-011 | 14.5.0-498 | 12.5.4-005 | 12.5.4-011 | 12.0.5-011 | 14.0.3-014 | 12.5.5-004 | 12.5.5-005 | 12.5.5-008 | 14.0.4-005 | 14.5.1-008 | 14.5.1-016 | 15.0.0-355 | 15.0.0-322 | 12.5.6-008 | 15.1.0-287 | 14.5.2-011 | 15.2.0-116 | 14.0.5-007 | 15.2.0-164 | 14.5.1-510 | 12.0.2-012 | 12.0.2-004 | 14.5.1-607 | 14.5.3-033 | 15.0.1-004 | 15.2.1-011 | 14.5.0-673 | 14.5.0-537 | 12.0.1-334 | 14.0.1-503 | 14.0.1-053 | 11.8.0-429 | 14.0.1-040 | 14.0.1-014 | 12.5.1-043 | 15.2.2-009 | 15.2.3-007 | 15.2.4-022 | 15.2.5-011 | 15.2.5-013 | 14.6.0-108

1 vendor · 1 product

References

1 links