CVE-2025-49087
LOW
3.7
CVSS Score
Published: July 20, 2025 at 12:00 AM UTC
Updated: June 17, 2026 at 09:30 AM UTC
2 products affected across 2 vendorsMbed TLSMbedtls
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Severity
LOW3.7
Exploit prediction
EPSS 0.5%
SSVC
No known exploit
Description
In Mbed TLS 3.6.1 through 3.6.3 before 3.6.4, a timing discrepancy in block cipher padding removal allows an attacker to recover the plaintext when PKCS#7 padding mode is used.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
3.6.1 ≤ v < 3.6.4
Affected range stops below 3.6.4, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
ExploitThird Party Advisory
Source: [email protected]
https://github.com/Mbed-TLS/mbedtls-docs/blob/main/security-advisories/mbedtls-security-advisory-2025-06-5.mdVendor Advisory
Source: [email protected]
https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusANALYZED
CWE
CWE-385
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