7.8

CVE-2025-20206: cisco cisco secure client

CVSS: 7.8v3.1HighAnalyzed
Published 05-03-2025Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2025-20206 is a high (CVSS 7.8) vulnerability in cisco cisco secure client. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 6.7% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.18%
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. 05-03-2025
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability in the interprocess communication (IPC) channel of Cisco Secure Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device if the Secure Firewall Posture Engine, formerly HostScan, is installed on Cisco Secure Client. This vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to a specific Cisco Secure Client process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid user credentials on the Windows system.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

7%

Versus all other CVEs

30-day change

0.00 pp

From 0.18% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.18%

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

Cisco2 products
  • cisco secure client4.9.00086 | 4.9.01095 | 4.9.02028 | 4.9.03047 | 4.9.03049 | 4.9.04043 | 4.9.04053 | 4.9.05042 | 4.9.06037 | 4.10.00093 | 4.10.01075 | 4.10.02086 | 4.10.03104 | 4.10.04065 | 4.10.04071 | 4.10.05085 | 4.10.05095 | 5.0.00238 | 4.10.05111 | 5.0.00529 | 5.0.00556 | 4.10.06079 | 5.0.01242 | 4.10.06090 | 5.0.02075 | 4.10.07061 | 5.0.03072 | 4.10.07062 | 5.0.03076 | 5.0.04032 | 4.10.07073 | 5.0.05040 | 5.1.0.136 | 5.1.1.42 | 4.10.08025 | 5.1.2.42 | 4.10.08029 | 5.1.3.62 | 5.1.4.74 | 5.1.5.65 | 5.1.6.103 | 5.1.7.80
  • secure_client< 5.1.8.105

1 vendor · 2 products

References

1 links