CVE-2021-45943

MEDIUMNVD 5.55.5—

5.5

GDAL 3.3.0 through 3.4.0 has a heap-based buffer overflow in PCIDSK::CPCIDSKFile::ReadFromFile (called from PCIDSK::CPCIDSKSegment::ReadFromFile and PCIDSK::CPCIDSKBinarySegment::CPCIDSKBinarySegment).

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 53.6%
KEV: Not listed

Published

January 1, 2022

Last Modified

November 21, 2024

References (22)

cve@mitrehttps://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41993
cve@mitrehttps://github.com/OSGeo/gdal/commit/1ca6a3e5168c200763fa46d8aa7e698d0b757e7e
cve@mitrehttps://github.com/OSGeo/gdal/pull/4944
cve@mitrehttps://github.com/google/oss-fuzz-vulns/blob/main/vulns/gdal/OSV-2021-1651.yaml
cve@mitrehttps://lists.debian.org/debian-lts-announce/2022/01/msg00004.html
cve@mitrehttps://lists.debian.org/debian-lts-announce/2022/09/msg00040.html
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JBPJGXY7IYY65NVJBLP3RONXE7ZBVCNU/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P23E4DEHY5FJCR5VJ46I6TO32DT7Y3T4/
cve@mitrehttps://security.gentoo.org/glsa/202210-15
cve@mitrehttps://www.debian.org/security/2022/dsa-5239
cve@mitrehttps://www.oracle.com/security-alerts/cpujul2022.html
af854a3a-2127-422b-91ae-364da2661108https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=41993
af854a3a-2127-422b-91ae-364da2661108https://github.com/OSGeo/gdal/commit/1ca6a3e5168c200763fa46d8aa7e698d0b757e7e
af854a3a-2127-422b-91ae-364da2661108https://github.com/OSGeo/gdal/pull/4944
af854a3a-2127-422b-91ae-364da2661108https://github.com/google/oss-fuzz-vulns/blob/main/vulns/gdal/OSV-2021-1651.yaml

Affected Packages

(1 across 1 ecosystem)

PyPI(1)

Package	Vulnerable range	Fixed in	Dependents
gdal	3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.4.0	3.4.1	—

Weakness Classification(1)

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

CWE-787Out-of-bounds Write

Data Freshness Timeline

(refreshed 11× in last 7d / 20× 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.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
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
2026-05-26 07:17 UTCepss_batch
2026-05-26 05:28 UTCEG score recompute
2026-05-26 05:28 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-45943?

CVE-2021-45943 is a medium vulnerability published on January 1, 2022. GDAL 3.3.0 through 3.4.0 has a heap-based buffer overflow in PCIDSK::CPCIDSKFile::ReadFromFile (called from PCIDSK::CPCIDSKSegment::ReadFromFile and PCIDSK::CPCIDSKBinarySegment::CPCIDSKBinarySegment).

When was CVE-2021-45943 disclosed?

CVE-2021-45943 was first published in the National Vulnerability Database on January 1, 2022, 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-2021-45943 actively exploited?

CVE-2021-45943 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-45943?

CVE-2021-45943 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2021-45943?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-45943, 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-2021-45943

📅 Published

🔄 Last Modified

🔗 References (22)

Affected Packages

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-45943?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (22)

Frequently asked(5)

Related CVEs(same CWE)