Skip to main content
No exploitation reportedFix available

CVE-2021-3496

No exploitation reported by the sources we read.

  • Published2021-04-22
  • WeaknessCWE-119 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A heap-based buffer overflow was found in jhead in version 3.06 in Get16u() in exif.c when processing a crafted file.

Timeline

dates in UTC
  1. 2021-04-2219:15CVE publishedNVD

Versions per branch

NVD
Jhead project jhead
BranchAffectedFixed in
3.6= 3.06no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • jheadUbuntu:Pro:22.04:LTSall versions · fixed in 1:3.06.0.1-2ubuntu0.22.04.1+esm1
  • jheadUbuntu:Pro:20.04:LTSall versions · fixed in 1:3.04-1ubuntu0.2+esm1
  • jheadUbuntu:Pro:18.04:LTSall versions · fixed in 1:3.00-8~ubuntu0.2+esm1
  • jheadUbuntu:Pro:16.04:LTSall versions · fixed in 1:3.00-4+deb9u1ubuntu0.1~esm3
  • jheadUbuntu:Pro:14.04:LTSall versions · fixed in 1:2.97-1+deb8u2ubuntu0.1~esm3
  • jheadSUSE:Package Hub 15 SP2all versions · fixed in 3.00-bp152.4.3.1
  • jheadSUSE:Package Hub 15 SP2all versions · fixed in 3.06.0.1-bp152.4.6.1
  • jheadopenSUSE:Tumbleweedall versions · fixed in 3.06.0.1-1.3

7 more package ranges on OSV.dev

Vendor advisories

  • CVE-2021-3496 Red Hat Product Security

    jhead: heap-based buffer overflow in Get16u() in exif.c

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.17.8read 2026-10-23
  • NVDCVSS 2.06.8read 2026-10-23
  • CNAweakness (CWE)CWE-119known since 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score1.1 %2026-11-08
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2021-04-22
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-rvxv-5pj2-85pq

Frequently asked questions

What is CVE-2021-3496?

A heap-based buffer overflow was found in jhead in version 3.06 in Get16u() in exif.c when processing a crafted file.

Is CVE-2021-3496 actively exploited?

Active exploitation of CVE-2021-3496 has not been confirmed. Its EPSS score was 1.1% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-3496?

CVE-2021-3496 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Running jhead? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record