CVE-2021-28276

FAUCET Score

CVE-2021-28276 is a Denial of Service vulnerability affecting jhead versions 3.04 and 3.05, stemming from a wild address read within the ProcessCanonMakerNoteDir function. With a CVSS score of 7.5 (HIGH), it is remotely exploitable with low attack complexity, potentially leading to system unavailability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		3.04CPE matchmatch criteria	cpe:2.3:a:jhead_project:jhead:3.04:::::::*
		3.05CPE matchmatch criteria	cpe:2.3:a:jhead_project:jhead:3.05:::::::*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

Exploitability Score

3.9

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

1.11%

Probability of exploitation in next 30 days

EPSS Percentile

62.5%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0111 is in the 40th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 (1)

github_advisorypatch availablevia nvd_reference

View patch

References

github.com / Matthias-Wandel/jhead/issues/1

Issue TrackingPatchThird Party Advisory

security.gentoo.org / glsa/202210-17

Third Party Advisory