redox-os v0.1.0 was discovered to contain a use-after-free bug via the gethostbyaddr() function at /src/header/netdb/mod.rs.

published 2023-05-03 3y ago modified 2026-06-17 4mo ago also EUVD-2020-15190

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

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CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: last yr. (2025-01-30)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

gitlab.redox-os.org https://gitlab.redox-os.org/redox-os/relibc/issues/159 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness

CWE-416 Use After Free

References

gitlab.redox-os.org /redox-os/relibc/issues/159
exploit, issue-tracking, third-party-advisory
burtonqin.github.io /posts/2023/04/CVE-2020-22429/
third-party-advisory

Sources

CVE List CVE-2020-22429
NVD CVE-2020-22429

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