EUVD-2025-20081Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V15 - Secure Coding and Architecture Compiler optimization removal of code
|
| Impact | Can lead to privilege escalation, data corruption, or bypassing of security checks depending on the context of the race. With a CVSS score of 7.8 (HIGH), this represents a significant risk. |
| Exploit ScenarioDerived | An attacker exploits a time-of-check-time-of-use (TOCTOU) window to modify a resource between when it's validated and when it's used. |
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Alert meAnalysisAIv1 – Mar 16, 2026
Mbed TLS before 3.6.4 has a race condition in AESNI detection if certain compiler optimizations occur. An attacker may be able to extract an AES key from a multithreaded program, or perform a GCM forgery.
Earlier versions of this analysis (1)
RemediationAI
Use proper synchronization mechanisms (locks, mutexes, atomic operations). Implement file locking for filesystem operations. Avoid TOCTOU patterns.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
A race condition occurs when the behavior of software depends on the timing of events, such as the order of execution of threads or processes.
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Severity by source
AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
3Executive ViewAI
Organizations using Mbed TLS before 3.6.4 face notable risk from CVE-2025-52496 rated CVSS 7.8. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available, increasing the risk of exploitation. A patch is available and should be applied as part of regular vulnerability management.
Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Mbed TLS before 3.0.1 has a double free in certain out-of-memory conditions, as demonstrated by an mbedtls_ssl_set_sessi
An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0. Rated critical severity (CVSS 9.1), this vulnera
An exploitable free of a stack pointer vulnerability exists in the x509 certificate parsing code of ARM mbed TLS before
Mbed TLS 3.2.x through 3.4.x before 3.5 has a Buffer Overflow that can lead to remote Code execution. Rated critical sev
An issue was discovered in Mbed TLS 3.5.1. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n
Alpine Linux: mbedtls fixed in 3.6.2-r0
An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. Rated critical severity (CVSS 9.8), this vulnera
Alpine Linux: mbedtls fixed in 3.6.1-r0
Alpine Linux: mbedtls fixed in 3.6.1-r0
Mbed TLS versions 2.19.0 through 3.6.5 and 4.0.0 allow remote code execution through memory corruption when attackers mo
ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0, when the truncated HMAC extension and CBC are used, allows
ARM mbed TLS before 1.3.22, before 2.1.10, and before 2.7.0 allows remote attackers to execute arbitrary code or cause a
Same technique Information Disclosure
View allVendor StatusVendor
Ubuntu
Priority: Medium| Release | Status | Version |
|---|---|---|
| oracular | ignored | end of life, was needs-triage |
| bionic | needed | - |
| focal | needed | - |
| jammy | needed | - |
| noble | needed | - |
| upstream | released | 3.6.4 |
| xenial | needed | - |
| plucky | ignored | end of life, was needed |
| questing | needed | - |
Debian
Bug #1108785| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | fixed | 2.16.9-0.1+deb11u2 | - |
| bullseye (security) | fixed | 2.16.9-0.1+deb11u3 | - |
| bookworm | vulnerable | 2.28.3-1 | - |
| trixie | fixed | 3.6.5-0.1~deb13u1 | - |
| forky, sid | fixed | 3.6.5-0.1 | - |
| (unstable) | fixed | 3.6.4-1 | - |
Exploit-DB