What is CVE-2021-36083?

CVE-2021-36083 is a medium-severity vulnerability in KDE Kimageformats, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2021-07-01.

How severe is CVE-2021-36083?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in KDE Kimageformats

CVE-2021-36083

KDE KImageFormats 5.70.0 through 5.81.0 has a stack-based buffer overflow in XCFImageFormat::loadTileRLE.

Vulnerability class: Buffer Overflow

Published 2021-07-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000

Affected products

KDE Kimageformats

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

invent.kde.org/frameworks/kimageformats/commit/297ed9a2fe339bfe36916b9fce628c32… (Patch, Third Party Advisory)
bugs.chromium.org/p/oss-fuzz/issues/detail (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/google/oss-fuzz-vulns/blob/main/vulns/kimageformats/OSV-2021-695.yaml (Third Party Advisory)

Frequently asked questions

What is CVE-2021-36083?: CVE-2021-36083 is a medium-severity vulnerability in KDE Kimageformats, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2021-07-01.
How severe is CVE-2021-36083?: Medium severity. CVSS v3 base score is 5.5 out of 10.