Device reload via malformed CAPWAP packet handling
Published Sep 24, 2025 · Updated Sep 24, 2025
Denial of service in Cisco IOS XE Software allows remote attackers to reload affected devices via malformed CAPWAP transit packets. The NBAR feature processes incorrect length values in malformed CAPWAP packets without safely bounding buffer access. Exposure requires a listed IOS XE platform and release with CAPWAP inspection for NBAR enabled and NBAR activated; exploitation interrupts service by unexpectedly reloading the device.
Summary
What happened
Denial of service in Cisco IOS XE Software allows remote attackers to reload affected devices via malformed CAPWAP transit packets. The NBAR feature processes incorrect length values in malformed CAPWAP packets without safely bounding buffer access. Exposure requires a listed IOS XE platform and release with CAPWAP inspection for NBAR enabled and NBAR activated; exploitation interrupts service by unexpectedly reloading the device.
The record
- CVE
- CVE-2025-20315
- Published
- Sep 24, 2025
- Updated
- Sep 24, 2025
- Vendor
- ClamAV
- Product
- Cisco IOS XE Software
- Classifications
- CWE-805, CAPEC-100, CAPEC-256, T1499
- Attack vector
- network
- Privileges
- unauthenticated
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
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=16.10.1
- Affected versionversion=16.10.1a
- Affected versionversion=16.10.1b
- Affected versionversion=16.10.1c
- Affected versionversion=16.10.1d
- Affected versionversion=16.10.1e
- Affected versionversion=16.10.1f
- Affected versionversion=16.10.1g
- Affected versionversion=16.10.1s
- Affected versionversion=16.10.2
- Affected versionversion=16.10.3
- Affected versionversion=16.1.1
- Affected versionversion=16.11.1
- Affected versionversion=16.11.1a
- Affected versionversion=16.11.1b
- Affected versionversion=16.11.1s
- Affected versionversion=16.11.2
- Affected versionversion=16.1.2
- Affected versionversion=16.12.1
- Affected versionversion=16.12.10
- Affected versionversion=16.12.10a
- Affected versionversion=16.12.11
- Affected versionversion=16.12.12
- Affected versionversion=16.12.13
- Affected versionversion=16.12.1a
- Affected versionversion=16.12.1c
- Affected versionversion=16.12.1s
- Affected versionversion=16.12.1t
- Affected versionversion=16.12.1w
- Affected versionversion=16.12.1x
- Affected versionversion=16.12.1y
- Affected versionversion=16.12.1z1
- Affected versionversion=16.12.1z2
- Affected versionversion=16.12.2
- Affected versionversion=16.12.2a
- Affected versionversion=16.12.2s
- Affected versionversion=16.12.3
- Affected versionversion=16.12.3a
- Affected versionversion=16.12.3s
- Affected versionversion=16.12.4
- Affected versionversion=16.12.4a
- Affected versionversion=16.12.5
- Affected versionversion=16.12.5a
- Affected versionversion=16.12.5b
- Affected versionversion=16.12.6
- Affected versionversion=16.12.6a
- Affected versionversion=16.12.7
- Affected versionversion=16.12.8
- Affected versionversion=16.12.9
- Affected versionversion=16.1.3
- Affected versionversion=16.2.1
- Affected versionversion=16.2.2
- Affected versionversion=16.3.1
- Affected versionversion=16.3.10
- Affected versionversion=16.3.11
- Affected versionversion=16.3.1a
- Affected versionversion=16.3.2
- Affected versionversion=16.3.3
- Affected versionversion=16.3.4
- Affected versionversion=16.3.5
- Affected versionversion=16.3.5b
- Affected versionversion=16.3.6
- Affected versionversion=16.3.7
- Affected versionversion=16.3.8
- Affected versionversion=16.3.9
- Affected versionversion=16.4.1
- Affected versionversion=16.4.2
- Affected versionversion=16.4.3
- Affected versionversion=16.5.1
- Affected versionversion=16.5.1a
- Affected versionversion=16.5.1b
- Affected versionversion=16.5.2
- Affected versionversion=16.5.3
- Affected versionversion=16.6.1
- Affected versionversion=16.6.10
- Affected versionversion=16.6.2
- Affected versionversion=16.6.3
- Affected versionversion=16.6.4
- Affected versionversion=16.6.4a
- Affected versionversion=16.6.5
- Affected versionversion=16.6.5a
- Affected versionversion=16.6.6
- Affected versionversion=16.6.7
- Affected versionversion=16.6.8
- Affected versionversion=16.6.9
- Affected versionversion=16.7.1
- Affected versionversion=16.7.1a
- Affected versionversion=16.7.1b
- Affected versionversion=16.7.2
- Affected versionversion=16.7.3
- Affected versionversion=16.7.4
- Affected versionversion=16.8.1
- Affected versionversion=16.8.1a
- Affected versionversion=16.8.1b
- Affected versionversion=16.8.1c
- Affected versionversion=16.8.1d
- Affected versionversion=16.8.1e
- Affected versionversion=16.8.1s
- Affected versionversion=16.8.2
- Affected versionversion=16.8.3
- Affected versionversion=16.9.1
- Affected versionversion=16.9.1a
- Affected versionversion=16.9.1b
- Affected versionversion=16.9.1s
- Affected versionversion=16.9.2
- Affected versionversion=16.9.3
- Affected versionversion=16.9.3a
- Affected versionversion=16.9.4
- Affected versionversion=16.9.5
- Affected versionversion=16.9.5f
- Affected versionversion=16.9.6
- Affected versionversion=16.9.7
- Affected versionversion=16.9.8
- Affected versionversion=17.10.1
- Affected versionversion=17.10.1a
- Affected versionversion=17.10.1b
- Affected versionversion=17.1.1
- Affected versionversion=17.11.1
- Affected versionversion=17.11.1a
- Affected versionversion=17.11.99SW
- Affected versionversion=17.1.1a
- Affected versionversion=17.1.1s
- Affected versionversion=17.1.1t
- Affected versionversion=17.12.1
- Affected versionversion=17.12.1a
- Affected versionversion=17.12.1w
- Affected versionversion=17.12.1x
- Affected versionversion=17.12.1y
- Affected versionversion=17.12.1z
- Affected versionversion=17.12.1z1
- Affected versionversion=17.12.1z2
- Affected versionversion=17.12.1z3
- Affected versionversion=17.12.2
- Affected versionversion=17.12.2a
- Affected versionversion=17.12.3
- Affected versionversion=17.12.3a
- Affected versionversion=17.12.4
- Affected versionversion=17.12.4a
- Affected versionversion=17.12.4b
- Affected versionversion=17.1.3
- Affected versionversion=17.13.1
- Affected versionversion=17.13.1a
- Affected versionversion=17.14.1
- Affected versionversion=17.14.1a
- Affected versionversion=17.15.1
- Affected versionversion=17.15.1a
- Affected versionversion=17.15.1b
- Affected versionversion=17.15.1w
- Affected versionversion=17.15.1x
- Affected versionversion=17.15.1z
- Affected versionversion=17.15.2
- Affected versionversion=17.15.2a
- Affected versionversion=17.15.2b
- Affected versionversion=17.15.2c
- Affected versionversion=17.16.1
- Affected versionversion=17.16.1a
- Affected versionversion=17.2.1
- Affected versionversion=17.2.1a
- Affected versionversion=17.2.1r
- Affected versionversion=17.2.1v
- Affected versionversion=17.2.2
- Affected versionversion=17.2.3
- Affected versionversion=17.3.1
- Affected versionversion=17.3.1a
- Affected versionversion=17.3.1w
- Affected versionversion=17.3.1x
- Affected versionversion=17.3.1z
- Affected versionversion=17.3.2
- Affected versionversion=17.3.2a
- Affected versionversion=17.3.3
- Affected versionversion=17.3.4
- Affected versionversion=17.3.4a
- Affected versionversion=17.3.4b
- Affected versionversion=17.3.4c
- Affected versionversion=17.3.5
- Affected versionversion=17.3.5a
- Affected versionversion=17.3.5b
- Affected versionversion=17.3.6
- Affected versionversion=17.3.7
- Affected versionversion=17.3.8
- Affected versionversion=17.3.8a
- Affected versionversion=17.4.1
- Affected versionversion=17.4.1a
- Affected versionversion=17.4.1b
- Affected versionversion=17.4.2
- Affected versionversion=17.4.2a
- Affected versionversion=17.5.1
- Affected versionversion=17.5.1a
- Affected versionversion=17.6.1
- Affected versionversion=17.6.1a
- Affected versionversion=17.6.1w
- Affected versionversion=17.6.1x
- Affected versionversion=17.6.1y
- Affected versionversion=17.6.1z
- Affected versionversion=17.6.1z1
- Affected versionversion=17.6.2
- Affected versionversion=17.6.3
- Affected versionversion=17.6.3a
- Affected versionversion=17.6.4
- Affected versionversion=17.6.5
- Affected versionversion=17.6.5a
- Affected versionversion=17.6.6
- Affected versionversion=17.6.6a
- Affected versionversion=17.6.7
- Affected versionversion=17.6.8
- Affected versionversion=17.6.8a
- Affected versionversion=17.7.1
- Affected versionversion=17.7.1a
- Affected versionversion=17.7.1b
- Affected versionversion=17.7.2
- Affected versionversion=17.8.1
- Affected versionversion=17.8.1a
- Affected versionversion=17.9.1
- Affected versionversion=17.9.1a
- Affected versionversion=17.9.1w
- Affected versionversion=17.9.1x
- Affected versionversion=17.9.1x1
- Affected versionversion=17.9.1y
- Affected versionversion=17.9.1y1
- Affected versionversion=17.9.2
- Affected versionversion=17.9.2a
- Affected versionversion=17.9.3
- Affected versionversion=17.9.3a
- Affected versionversion=17.9.4
- Affected versionversion=17.9.4a
- Affected versionversion=17.9.5
- Affected versionversion=17.9.5a
- Affected versionversion=17.9.5b
- Affected versionversion=17.9.5e
- Affected versionversion=17.9.5f
- Affected versionversion=17.9.6
- Affected versionversion=17.9.6a
- Affected versionversion=3.11.0S
- Affected versionversion=3.11.1S
- Affected versionversion=3.11.2S
- Affected versionversion=3.11.3S
- Affected versionversion=3.11.4S
- Affected versionversion=3.12.0aS
- Affected versionversion=3.12.0S
- Affected versionversion=3.12.1S
- Affected versionversion=3.12.2S
- Affected versionversion=3.12.3S
- Affected versionversion=3.12.4S
- Affected versionversion=3.13.0aS
- Affected versionversion=3.13.0S
- Affected versionversion=3.13.10S
- Affected versionversion=3.13.1S
- Affected versionversion=3.13.2aS
- Affected versionversion=3.13.2S
- Affected versionversion=3.13.3S
- Affected versionversion=3.13.4S
- Affected versionversion=3.13.5aS
- Affected versionversion=3.13.5S
- Affected versionversion=3.13.6aS
- Affected versionversion=3.13.6S
- Affected versionversion=3.13.7aS
- Affected versionversion=3.13.7S
- Affected versionversion=3.13.8S
- Affected versionversion=3.13.9S
- Affected versionversion=3.14.0S
- Affected versionversion=3.14.1S
- Affected versionversion=3.14.2S
- Affected versionversion=3.14.3S
- Affected versionversion=3.14.4S
- Affected versionversion=3.15.0S
- Affected versionversion=3.15.1cS
- Affected versionversion=3.15.1S
- Affected versionversion=3.15.2S
- Affected versionversion=3.15.3S
- Affected versionversion=3.15.4S
- Affected versionversion=3.16.0cS
- Affected versionversion=3.16.0S
- Affected versionversion=3.16.10S
- Affected versionversion=3.16.1aS
- Affected versionversion=3.16.1S
- Affected versionversion=3.16.2aS
- Affected versionversion=3.16.2bS
- Affected versionversion=3.16.2S
- Affected versionversion=3.16.3aS
- Affected versionversion=3.16.3S
- Affected versionversion=3.16.4aS
- Affected versionversion=3.16.4bS
- Affected versionversion=3.16.4dS
- Affected versionversion=3.16.4S
- Affected versionversion=3.16.5S
- Affected versionversion=3.16.6bS
- Affected versionversion=3.16.6S
- Affected versionversion=3.16.7aS
- Affected versionversion=3.16.7bS
- Affected versionversion=3.16.7S
- Affected versionversion=3.16.8S
- Affected versionversion=3.16.9S
- Affected versionversion=3.17.0S
- Affected versionversion=3.17.1aS
- Affected versionversion=3.17.1S
- Affected versionversion=3.17.2S
- Affected versionversion=3.17.3S
- Affected versionversion=3.17.4S
- Affected versionversion=3.18.0aS
- Affected versionversion=3.18.0S
- Affected versionversion=3.18.0SP
- Affected versionversion=3.18.1aSP
- Affected versionversion=3.18.1bSP
- Affected versionversion=3.18.1cSP
- Affected versionversion=3.18.1S
- Affected versionversion=3.18.1SP
- Affected versionversion=3.18.2aSP
- Affected versionversion=3.18.2S
- Affected versionversion=3.18.2SP
- Affected versionversion=3.18.3aSP
- Affected versionversion=3.18.3bSP
- Affected versionversion=3.18.3S
- Affected versionversion=3.18.3SP
- Affected versionversion=3.18.4S
- Affected versionversion=3.18.4SP
- Affected versionversion=3.18.5SP
- Affected versionversion=3.18.6SP
- Affected versionversion=3.18.7SP
- Affected versionversion=3.18.8aSP
- Affected versionversion=3.18.9SP
- Affected versionversion=3.7.0bS
- Affected versionversion=3.7.0S
- Affected versionversion=3.7.1aS
- Affected versionversion=3.7.1S
- Affected versionversion=3.7.2S
- Affected versionversion=3.7.2tS
- Affected versionversion=3.7.3S
- Affected versionversion=3.7.4aS
- Affected versionversion=3.7.4S
- Affected versionversion=3.7.5S
- Affected versionversion=3.7.6S
- Affected versionversion=3.7.7S
- Affected versionversion=3.8.0S
- Affected versionversion=3.8.1S
- Affected versionversion=3.8.2S
- Affected versionversion=3.9.0aS
- Affected versionversion=3.9.0S
- Affected versionversion=3.9.1aS
- Affected versionversion=3.9.1S
- Affected versionversion=3.9.2S
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.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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