CVE-2021-3496
CVE-2021-3496 is a high-severity vulnerability in Jhead Project Jhead with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Jhead Project Jhead
- Published:
- Last modified:
Description
A heap-based buffer overflow was found in jhead in version 3.06 in Get16u() in exif.c when processing a crafted file.
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.
- How severe is CVE-2021-3496?
- CVE-2021-3496 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-3496 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-3496?
- CVE-2021-3496 affects Jhead Project Jhead. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-3496?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-3496 published?
- CVE-2021-3496 was published on 2021-04-22 and last updated on 2026-06-17.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1949245
- https://github.com/Matthias-Wandel/jhead/issues/33
- https://security.gentoo.org/glsa/202210-17
Affected products (1)
- cpe:2.3:a:jhead_project:jhead:3.06:*:*:*:*:*:*:*
More vulnerabilities in Jhead Project Jhead
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- CVE-2021-34055 — High (CVSS 7.8): jhead 3.06 is vulnerable to Buffer Overflow via exif.c in function Put16u.
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