A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_destroy() is called prior to ares_getaddrinfo() completing. This flaw possibly allows an attacker to crash the service that uses c-ares lib. The highest threat from this vulnerability is to this service availability.
CVE-2020-14354
Score 3.3 from GitHub Security Advisory (severity: LOW) published 2022-05-24. NVD baseline CVSS 3.3; sources differ by 0.0.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.3
- EG Score
- 3.3(medium)
- EPSS
- 41.0%
- KEV
- Not listed
Published
May 13, 2021
Last Modified
November 21, 2024
References (10)
- secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=1866838
- secalert@redhathttps://c-ares.haxx.se/changelog.html
- secalert@redhathttps://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170e
- secalert@redhathttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/
- secalert@redhathttps://packetstormsecurity.com/files/158755/GS20200804145053.txt
- af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1866838
- af854a3a-2127-422b-91ae-364da2661108https://c-ares.haxx.se/changelog.html
- af854a3a-2127-422b-91ae-364da2661108https://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170e
- af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/
- af854a3a-2127-422b-91ae-364da2661108https://packetstormsecurity.com/files/158755/GS20200804145053.txt
Weakness Classification(3)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 46× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-12 05:44 UTCEPSS rescore
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- 2026-06-13 06:13 UTCOSV refresh
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- 2026-05-26 16:41 UTCEG score recompute
- 2026-05-26 16:40 UTCGHSA enrichment
- 2026-05-26 13:42 UTCEPSS rescore
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- 2026-05-26 07:17 UTCEPSS rescore
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Related CVEs(same CWE)
Same CWE
10 shownCWE-120 · CWE-415 · CWE-416
- CVE-2010-10016EG 10.0CRITICAL
- CVE-2009-0948EG 9.8CRITICAL
- CVE-2007-4773EG 9.8CRITICAL
- CVE-2006-3100EG 9.8CRITICAL
- CVE-2009-5041EG 9.8CRITICAL
- CVE-2004-0772EG 9.8EPSS 93%CRITICAL
- CVE-2003-0545EG 9.8EPSS 100%CRITICAL
- CVE-2002-0059EG 9.8EPSS 95%CRITICAL
- CVE-2010-0806NVD 8.8EG 9.0 KEVEPSS 100%HIGH
- CVE-2010-0249NVD 8.8EG 9.0 KEVEPSS 100%HIGH
Frequently asked(5)
What is CVE-2020-14354?
When was CVE-2020-14354 disclosed?
Is CVE-2020-14354 actively exploited?
What is the CVSS score of CVE-2020-14354?
How do I remediate CVE-2020-14354?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2020-14354
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