Cyber Resilience

CVE-2020-37239

CriticalPublic PoC

Published: 16 May 2026

Published
16 May 2026
Modified
18 May 2026
KEV Added
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Patch
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CVSS Score v4 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0046 36.6th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2020-37239 is a critical-severity Double Free (CWE-415) vulnerability in Gegl (inferred from references). Its CVSS base score is 9.3 (Critical).

Operationally, ranked at the 36.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

libbabl 0.1.62 contains a broken double free detection vulnerability that allows attackers to bypass memory safety checks by exploiting signature overwriting in freed chunks. Attackers can call babl_free() twice on the same pointer without triggering detection, as libc's malloc metadata…

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overwrites babl's signature field upon freeing, enabling potential memory corruption and code execution.

CWE(s)
CWE-415

Related Threats

CVEs Like This One

CVE-2026-31506Shared CWE-415
CVE-2026-31609Shared CWE-415
CVE-2022-49391Shared CWE-415
CVE-2022-49686Shared CWE-415
CVE-2023-52930Shared CWE-415
CVE-2026-31507Shared CWE-415
CVE-2026-23162Shared CWE-415
CVE-2025-21183Shared CWE-415
CVE-2022-49290Shared CWE-415
CVE-2025-32988Shared CWE-415

Affected Assets

Gegl
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inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

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

References