CVE-2020-23922

HIGHNVD 7.17.1—

7.1

An issue was discovered in giflib through 5.1.4. DumpScreen2RGB in gif2rgb.c has a heap-based buffer over-read.

CVSS v3: 7.1
EG Score: 7.1(medium)
EPSS: 84.4%
KEV: Not listed

Published

April 21, 2021

Last Modified

November 21, 2024

References (8)

cve@mitrehttps://cwe.mitre.org/data/definitions/126.html
cve@mitrehttps://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
cve@mitrehttps://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
cve@mitrehttps://sourceforge.net/p/giflib/bugs/151/
af854a3a-2127-422b-91ae-364da2661108https://cwe.mitre.org/data/definitions/126.html
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://sourceforge.net/p/giflib/bugs/151/

Vendor Advisories for CVE-2020-23922(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

RHSA-2026:4128
Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat AI Inference Server Model Optimization Tools 3.2.2 (CUDA)

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	rhaiis/model-opt-cuda-rhel9:sha256:2fd4f343235f7e896a70169fc4b856343d639c65bec77c1883cbd8210caf3a92	2026-03-09	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-125Out-of-bounds Read

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-26 18:01 UTCEG score recompute
2026-05-26 18:01 UTCVendor advisory
2026-05-26 18:01 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 16:48 UTCepss_batch

Frequently asked(5)

What is CVE-2020-23922?

CVE-2020-23922 is a high vulnerability published on April 21, 2021. An issue was discovered in giflib through 5.1.4. DumpScreen2RGB in gif2rgb.c has a heap-based buffer over-read.

When was CVE-2020-23922 disclosed?

CVE-2020-23922 was first published in the National Vulnerability Database on April 21, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-23922 actively exploited?

CVE-2020-23922 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 84.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-23922?

CVE-2020-23922 has a CVSS v3 base score of 7.1 (NVD).

How do I remediate CVE-2020-23922?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-23922, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2020-23922

📅 Published

🔄 Last Modified

🔗 References (8)

📣 Vendor Advisories for CVE-2020-23922(1)