Authenticated device reboot via crafted web UI URL
Published Sep 24, 2025 · Updated Sep 24, 2025
Improper input validation in the Cisco IOS Software web UI allows remote authenticated users to reload devices through crafted URLs. The Industrial Ethernet Switch Device Manager processes a URL from an HTTP request without properly validating its specified input type, causing the device to reboot. Low-privileged access and an enabled HTTP Server feature are required; a successful request interrupts service during the reload.
Summary
What happened
Improper input validation in the Cisco IOS Software web UI allows remote authenticated users to reload devices through crafted URLs. The Industrial Ethernet Switch Device Manager processes a URL from an HTTP request without properly validating its specified input type, causing the device to reboot. Low-privileged access and an enabled HTTP Server feature are required; a successful request interrupts service during the reload.
The record
- CVE
- CVE-2025-20327
- Published
- Sep 24, 2025
- Updated
- Sep 24, 2025
- Vendor
- ClamAV
- Product
- Cisco IOS Software
- Classifications
- CWE-1287, T1499
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 24, 2025CVE publishedPublication date reported by the CVE source.
- Sep 24, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=15.2(6)E2
- Affected versionversion=15.2(6)E2a
- Affected versionversion=15.2(6)E2b
- Affected versionversion=15.2(6)E3
- Affected versionversion=15.2(7a)E0b
- Affected versionversion=15.2(7b)E0b
- Affected versionversion=15.2(7)E
- Affected versionversion=15.2(7)E0a
- Affected versionversion=15.2(7)E0b
- Affected versionversion=15.2(7)E0s
- Affected versionversion=15.2(7)E1
- Affected versionversion=15.2(7)E10
- Affected versionversion=15.2(7)E1a
- Affected versionversion=15.2(7)E2
- Affected versionversion=15.2(7)E2a
- Affected versionversion=15.2(7)E3
- Affected versionversion=15.2(7)E3k
- Affected versionversion=15.2(7)E4
- Affected versionversion=15.2(7)E5
- Affected versionversion=15.2(7)E6
- Affected versionversion=15.2(7)E7
- Affected versionversion=15.2(7)E8
- Affected versionversion=15.2(7)E9
- Affected versionversion=15.2(8)E
- Affected versionversion=15.2(8)E1
- Affected versionversion=15.2(8)E2
- Affected versionversion=15.2(8)E3
- Affected versionversion=15.2(8)E4
- Affected versionversion=15.2(8)E5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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