CVE•Published 2026-05-16•Modified 2026-05-18•1 article on news•7 live references•NVD data
CVE-2020-37239
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
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Weaknesses (CWE)
Description
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 overwrites babl's signature field upon freeing, enabling potential memory corruption and code execution.
Timeline
Published 2026-05-16
Modified 2026-05-18
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2020-37239Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2020-37239Censys host search filtered to this CVE id.
grep.app
CVE-2020-37239Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2020-37239GitHub code search for direct mentions.
Google dork
"CVE-2020-37239" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2020-37239 on GitHub.