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UBUNTU-CVE-2026-35328
Infinite Loop When Handling Supported Versions TLS Extension
AI summary snake-internal / snake-template-v1
A weakness called UBUNTU-CVE-2026-35328 was discovered in Infinite Loop When Handling.
Severity is Info. Low severity or not yet rated.
What you should do: update the affected software to the latest version. If unsure, ask your IT team or search the vendor's site for "Infinite Loop When Handling UBUNTU-CVE-2026-35328".
UBUNTU-CVE-2026-35328 (Infinite Loop When Handling). Severity: Info.
Response plan:
1. Check the vendor advisory for affected versions and the patched release.
2. If a vulnerable version is running in production, schedule maintenance (urgency from KEV/CVSS).
3. If no patch yet, mitigate via WAF rule, disabling the affected feature, etc.
4. Monitor logs / SIEM for known IOC and PoC signatures of this CVE.
PoCs and fix commits: see the 'References' section, MITRE, and NVD.
❓ What is the problem
A weakness (UBUNTU-CVE-2026-35328) in Infinite Loop When Handling. A serious software flaw has been identified.
📍 Affected scope
Target versions of Infinite Loop When Handling (see vendor advisory). If running in production, identify exposure immediately.
🔥 Severity
Severity: Info. Low severity or not yet rated.
🔧 How to fix
Update to the patched release as listed in the vendor advisory.
🛡️ Workaround
If a patch is not yet available, consider disabling the affected feature, applying WAF rules, blocking via network ACLs, or isolating the vulnerable version.
🔍 Detection
Check version information, scan dependencies via SBOM, and monitor SIEM for IOC and PoC signatures related to this CVE.
Affected packages
Ubuntu:Pro:14.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:16.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:FIPS:16.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:18.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:FIPS-updates:18.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:FIPS:18.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:20.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:FIPS-updates:20.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:FIPS:20.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:22.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9.5-2ubuntu2.6"}]}]
Ubuntu:Pro:FIPS-preview:22.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Ubuntu:Pro:FIPS-updates:22.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9.5-2ubuntu2.6+Fips1"}]}]
Ubuntu:24.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9.13-2ubuntu4.24.04.3"}]}]
Ubuntu:25.10
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.1-6ubuntu4.3"}]}]
Ubuntu:26.04:LTS
strongswan
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.4-1ubuntu3"}]}]
References
- advisory https://ubuntu.com/security/notices/USN-8196-1
- advisory https://ubuntu.com/security/notices/USN-8196-2
- report https://ubuntu.com/security/CVE-2026-35328
- report https://www.cve.org/CVERecord?id=CVE-2026-35328
- report https://strongswan.org/blog/2026/04/22/strongswan-vulnerability-(cve-2026-35328).html