CVE-2021-28276

A Denial of Service vulnerability exists in jhead 3.04 and 3.05 via a wild address read in the ProcessCanonMakerNoteDir function in makernote.c.

Published: 2022-03-23 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-28276 is rated Moderate Risk (52/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.08%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-28276

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.37% 1.08% +0.72%
2 2026-05-25 0.10% 0.37% +0.27%
3 2025-11-21 — 0.10% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-28276

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2021-28276

OS Trackers for CVE-2021-28276

vendor priority summary link
debian unimportant CVE-2021-28276 unimportant priority: Debian including 1 source packages (jhead), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. https://security-tracker.debian.org/tracker/CVE-2021-28276
gentoo low CVE-2021-28276: 1 GLSA(s) (202210-17), 1 atom(s) (media-gfx/jhead); latest impact low. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-28276
ubuntu medium CVE-2021-28276 medium priority: Ubuntu including 1 source packages (jhead), 9 status rows across 9 suites (bionic, focal, impish, jammy, kinetic, lunar, trusty, upstream, xenial): not-affected 4, released 4, ignored 1. https://ubuntu.com/security/CVE-2021-28276

Affected software / configurations for CVE-2021-28276

Vendor Product Version Raw CPE
jhead_project jhead 3.04 cpe:2.3:a:jhead_project:jhead:3.04:*:*:*:*:*:*:*
jhead_project jhead 3.05 cpe:2.3:a:jhead_project:jhead:3.05:*:*:*:*:*:*:*

References for CVE-2021-28276

URL Tags
https://github.com/Matthias-Wandel/jhead/issues/1 Issue Tracking Patch Third Party Advisory
https://security.gentoo.org/glsa/202210-17 Third Party Advisory
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