MEDIUM
CVE-2021-36083
CWE-787Published: July 1, 2021· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
KDE KImageFormats 5.70.0 through 5.81.0 has a stack-based buffer overflow in XCFImageFormat::loadTileRLE.
Technical Analysis
CVE-2021-36083 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Vendors & Products
kde1 product(s)
kimageformats
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (6)
→
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33742Exploit · Issue Tracking · Patch · Third Party Advisory
→
→
https://invent.kde.org/frameworks/kimageformats/commit/297ed9a2fe339bfe36916b9fce628c3242e5be0fPatch · Third Party Advisory
→
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33742Exploit · Issue Tracking · Patch · Third Party Advisory
→
→
https://invent.kde.org/frameworks/kimageformats/commit/297ed9a2fe339bfe36916b9fce628c3242e5be0fPatch · Third Party Advisory
Quick Facts
CVE IDCVE-2021-36083
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedJul 1, 2021
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-36083 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.