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CVE-2020-28840

22
FAUCET Score

CVE-2020-28840 describes a buffer overflow vulnerability in Matthias-Wandel's jhead version 3.04, specifically within the jpgfile.c component. This flaw allows a local attacker to execute arbitrary code or trigger a denial of service. With a CVSS score of 7.8 (High), the vulnerability has a low attack complexity and requires local access, but can lead to high impacts on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, nor are there public exploits available in Metasploit, Nuclei, or ExploitDB, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.04CPE matchmatch criteria
cpe:2.3:a:matthiaswandel:jhead:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 64th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

bugs.launchpad.net / ubuntu/+source/jhead/+bug/1900820
ExploitIssue Tracking
github.com / F-ZhaoYang/jhead/security/advisories/GHSA-xh27-xwgj-gqw2
Exploit
github.com / Matthias-Wandel/jhead/commit/4827ed31c226dc5ed93603bd649e0e387a1778da
Patch
github.com / Matthias-Wandel/jhead/issues/8
ExploitIssue TrackingPatch