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TI-2019-12829 Aliases CVE-2019-17211GHSA-7vph-mg46-qvjr

An integer overflow was discovered in the CoAP library in Arm Mbed OS 5.14.0.

Priority MEDIUM 47CWE-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 3.1 · NVD. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

An integer overflow was discovered in the CoAP library in Arm Mbed OS 5.14.0. The function sn_coap_builder_calc_needed_packet_data_size_2() is used to calculate the required memory for the CoAP message from the sn_coap_hdr_s data structure. Both returned_byte_count and src_coap_msg_ptr->payload_len are of type uint16_t. When added together, the result returned_byte_count can wrap around the maximum uint16_t value. As a result, insufficient buffer space is allocated for the corresponding CoAP message.

Why it matters now

EPSS 0.02574 85th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:mbed:mbed:5.13.2:*:*:*:*:*:*:*5.13.2VulnerableMbed
cpe:2.3:o:mbed:mbed:5.14.0:*:*:*:*:*:*:*5.14.0VulnerableMbed
  • cpe:2.3:o:mbed:mbed:5.13.2:*:*:*:*:*:*:* Versions 5.13.2 Vulnerable ·Mbed
  • cpe:2.3:o:mbed:mbed:5.14.0:*:*:*:*:*:*:* Versions 5.14.0 Vulnerable ·Mbed

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-17211
  2. 2026-10-03 Alias added: GHSA-7vph-mg46-qvjr

References

Exploit 1

Advisory 7

  • TI-2019-12830 Buffer overflows were discovered in the CoAP library in Arm Mbed OS 5.14.0. CVSS 3.1CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences