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TI-2024-00887 Aliases CVE-2024-0962GHSA-7qg3-c5c5-86rv

obgm libcoap Configuration File coap_oscore.c get_split_entry stack-based overflow

Priority HIGH 67CWE-121Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
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-121 and the CVSS impact.

Summary

A vulnerability was found in obgm libcoap 4.3.4. It has been rated as critical. Affected by this issue is the function get_split_entry of the file src/coap_oscore.c of the component Configuration File Handler. The manipulation leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue. VDB-252206 is the identifier assigned to this vulnerability.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00757 55th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
obgmlibcoap4.3.4—No fix listedCNA
  • libcoap Vendorobgm Affected 4.3.4 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:libcoap:libcoap:4.3.4:*:*:*:*:*:*:*4.3.4Vulnerablelibcoap
  • cpe:2.3:a:libcoap:libcoap:4.3.4:*:*:*:*:*:*:* Versions 4.3.4 Vulnerable ·libcoap

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-0962
  2. 2026-10-03 Alias added: GHSA-7qg3-c5c5-86rv

References

Exploit 2

Patch 1

  • TI-2024-20447 An issue in `coap_pdu.c` in libcoap 4.3.4 allows attackers to cause undefined behavior… CVSS 3.1HIGH 7.5
  • TI-2023-17937 libcoap 4.3.1 contains a buffer over-read via the function coap_parse_oscore_conf_mem at coap_oscore.c. CVSS 3.1MEDIUM 6.5
  • TI-2026-23178 libcoap Out-of-Bounds Read in OSCORE CBOR Unwrap Handling CVSS 4.0HIGH 8.8
  • TI-2023-14242 Buffer Overflow vulnerability in coap_send function in libcoap library 4.3.1-103-g52cfd56… CVSS 3.1HIGH 7.5
  • TI-2025-40369 NULL pointer dereference in src/coap_openssl.c in OISM libcoap 4.3.5 allows remote… CVSS 3.1HIGH 7.5
  • TI-2025-40371 Integer signedness error in tls_verify_call_back() in src/coap_openssl.c in OISM libcoap… CVSS 3.1HIGH 7.5
See all 15 →

Sources

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