What is CVE-2025-20327?

CVE-2025-20327 is a high-severity vulnerability in Cisco Ios, classified under CWE-1287. CVSS score: 7.7/10. Published 2025-09-24.

How severe is CVE-2025-20327?

High severity. CVSS v3 base score is 7.7 out of 10.

Vulnerability in Cisco Ios

CVE-2025-20327

A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation. An attacker could exploit this vulnerability by sending a crafted URL in an HTTP request. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

EPSS: 0.004 (28.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.

Affected products

Cisco Ios — versions 15.2(6)E2, 15.2(7)E, 15.2(6)E2a

Weakness classification (CWE)

CWE-1287

References

psirt@cisco.com

Frequently asked questions

What is CVE-2025-20327?: CVE-2025-20327 is a high-severity vulnerability in Cisco Ios, classified under CWE-1287. CVSS score: 7.7/10. Published 2025-09-24.
How severe is CVE-2025-20327?: High severity. CVSS v3 base score is 7.7 out of 10.