An issue was discovered in Mbed TLS before 2.24.0 (and before 2.16.8 LTS and before…
Priority LOW 36CWE-212Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
An issue was discovered in Mbed TLS before 2.24.0 (and before 2.16.8 LTS and before 2.7.17 LTS). There is missing zeroization of plaintext buffers in mbedtls_ssl_read to erase unused application data from memory.
Why it matters now
EPSS 0.0157 75th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2020-36476
- 2026-10-03 Alias added: GHSA-gmh5-5f53-3929
References
Advisory 5
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0
- [debian-lts-announce] 20211123 [SECURITY] [DLA 2826-1] mbedtls security update
- [debian-lts-announce] 20221225 [SECURITY] [DLA 3249-1] mbedtls security update
Sources
- CVE-2020-36476 · CVE Program
- CVE-2020-36476 · NVD
- FIRST EPSS
- GHSA-gmh5-5f53-3929 · GitHub Advisory Database · CC BY 4.0
- CVE-2020-36476 · Red Hat security data · CC BY 4.0
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