HOMEVULNERABILITIESCVE-2020-25693
HIGH

CVE-2020-25693

CWE-190Published: December 3, 2020· Updated: Jun 17, 2026

8.1
CVSS v3.1

Official Description

A flaw was found in CImg in versions prior to 2.9.3. Integer overflows leading to heap buffer overflows in load_pnm() can be triggered by a specially crafted input file processed by CImg, which can lead to an impact to application availability or data integrity.

NVD Source

Technical Analysis

CVE-2020-25693 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

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 complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Affected Vendors & Products

cimg1 product(s)
cimg
Fedora1 product(s)
fedora
Source: NVD CPE · 4 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

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1893377
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1893377

All References (8)

→
https://bugzilla.redhat.com/show_bug.cgi?id=1893377Exploit · Issue Tracking · Patch · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERBZALTF7LXN2LZLPGAUSVMV53GHHTUC/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MJ5Q7NNUPXATTBUKHFKIYYAV5GJDYCZL/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QZ3NPLYXZWEL7HETIFZVCXEZZ2WYYRWA/
→
https://bugzilla.redhat.com/show_bug.cgi?id=1893377Exploit · Issue Tracking · Patch · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERBZALTF7LXN2LZLPGAUSVMV53GHHTUC/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MJ5Q7NNUPXATTBUKHFKIYYAV5GJDYCZL/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QZ3NPLYXZWEL7HETIFZVCXEZZ2WYYRWA/

Quick Facts

CVE IDCVE-2020-25693
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-190
CISA KEVNo
Affected2 vendor(s)
PublishedDec 3, 2020

Related CVEs (CWE-190)

CVE-2008-2663
10.0
CVE-2012-5143
10.0
CVE-2026-24814
10.0
CVE-2025-64721
10.0
CVE-2010-3254
10.0
CVE-2013-2555
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-25693 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. CVE data is provided under the NVD usage policy.
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