In ARM mbed TLS before 2.7.0, there is a bounds-check bypass through an integer overflow…
Priority MEDIUM 48CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.
Summary
In ARM mbed TLS before 2.7.0, there is a bounds-check bypass through an integer overflow in PSK identity parsing in the ssl_parse_client_psk_identity() function in library/ssl_srv.c.
Why it matters now
EPSS 0.03115 87th 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-2017-18187
- 2026-10-03 Alias added: GHSA-3g9w-ghrc-hc72
References
Sources
- CVE-2017-18187 · CVE Program
- CVE-2017-18187 · NVD
- FIRST EPSS
- GHSA-3g9w-ghrc-hc72 · GitHub Advisory Database · CC BY 4.0
- CVE-2017-18187 · Red Hat security data · CC BY 4.0
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