Cyber Resilience

CVE-2023-35709

High

Published: 03 May 2024

Published
03 May 2024
Modified
25 August 2025
KEV Added
Patch
CVSS Score v3 7.8 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0078 74.1th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-35709 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Ashlar Cobalt. Its CVSS base score is 7.8 (High).

Operationally, ranked in the top 25.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Ashlar-Vellum Cobalt Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious…

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page or open a malicious file. The specific flaw exists within the parsing of CO files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-19928.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

ashlar
cobalt
12.0.1204.57

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References