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CVE-2021-45943

22
FAUCET Score

CVE-2021-45943 describes a heap-based buffer overflow vulnerability in GDAL versions 3.3.0 through 3.4.0, specifically within the PCIDSK::CPCIDSKFile::ReadFromFile function. This medium-severity vulnerability (CVSS 5.5) requires user interaction and local access to exploit, potentially leading to a denial of service. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.3.0, <= 3.4.0CPE matchmatch criteria
cpe:2.3:a:osgeo:gdal:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.49%
Probability of exploitation in next 30 days
EPSS Percentile
71.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0149 is in the 82nd percentile among its peer group of 5,760 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
oraclepatch availablevia nvd_reference
View patch

References

bugs.chromium.org / p/oss-fuzz/issues/detail
ExploitIssue TrackingMailing ListPatchThird Party Advisory
github.com / google/oss-fuzz-vulns/blob/main/vulns/gdal/OSV-2021-1651.yaml
Third Party Advisory
github.com / OSGeo/gdal/commit/1ca6a3e5168c200763fa46d8aa7e698d0b757e7e
PatchThird Party Advisory
github.com / OSGeo/gdal/pull/4944
ExploitPatchThird Party Advisory
lists.debian.org / debian-lts-announce/2022/01/msg00004.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2022/09/msg00040.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/JBPJGXY7IYY65NVJBLP3RONXE7ZBVCNU
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/P23E4DEHY5FJCR5VJ46I6TO32DT7Y3T4
security.gentoo.org / glsa/202210-15
Third Party Advisory
debian.org / security/2022/dsa-5239
Third Party Advisory
oracle.com / security-alerts/cpujul2022.html
PatchThird Party Advisory