EUVD-2026-21216
GHSA-f5fh-xmxq-55p9
4.1
CVSS 4.0
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CVSS Vector
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
High
Privileges Required
High
User Interaction
P
Scope
X
Lifecycle Timeline
3
EUVD ID Assigned
Apr 09, 2026 - 22:31 euvd
EUVD-2026-21216
Analysis Generated
Apr 09, 2026 - 22:31 vuln.today
CVE Published
Apr 09, 2026 - 22:18 nvd
MEDIUM 4.1
Tags
Description
When restoring a session from cache, a pointer from the serialized session data is used in a free operation without validation. An attacker who can poison the session cache could trigger an arbitrary free. Exploitation requires the ability to inject a crafted session into the cache and for the application to call specific session restore APIs.
Analysis
wolfSSL versions up to 5.9.0 allow arbitrary memory deallocation via unsafe deserialization of poisoned session cache data. An attacker with high privileges who can inject a crafted session into the cache and trigger specific session restore API calls can cause memory corruption with availability impact. …
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Priority Score
20
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +20
POC: 0
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