Unauthenticated code execution via oversized IKEv2 certificate chains
Published Dec 19, 2025 · Updated Dec 19, 2025
Out-of-bounds write in Fireware OS iked allows remote attackers to execute arbitrary code through crafted IKEv2 authentication traffic. The process mishandles certificate chains exceeding eight entries or abnormally large CERT payloads and writes beyond its destination buffer. No authentication is required, but exposure requires an affected IKEv2 VPN configuration; exploitation can compromise appliance data and hang or crash iked.
Summary
What happened
Out-of-bounds write in Fireware OS iked allows remote attackers to execute arbitrary code through crafted IKEv2 authentication traffic. The process mishandles certificate chains exceeding eight entries or abnormally large CERT payloads and writes beyond its destination buffer. No authentication is required, but exposure requires an affected IKEv2 VPN configuration; exploitation can compromise appliance data and hang or crash iked.
The record
- CVE
- CVE-2025-14733
- Published
- Dec 19, 2025
- Updated
- Dec 19, 2025
- Vendor
- WatchGuard Technologies, Inc.
- Product
- Fireware OS
- Classifications
- CWE-787, CAPEC-100, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 19, 2025CVE publishedPublication date reported by the CVE source.
- Dec 19, 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=11.10.2 <=11.12.4+541730
- Affected versionversion=12.0 <=12.11.5
- Affected versionversion=12.5 <=12.5.14
- Affected versionversion=2025.1 <=2025.1.3
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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Reported exploitation
- Active exploitation attempts against exposed Firebox appliancesreported exploitation
Technologies
Your stack
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Your stack
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