How severe is CVE-2021-34055?

CVE-2021-34055 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-2021-34055 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34055?

CVE-2021-34055 primarily affects Jhead Project Jhead. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-34055?

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-2021-34055 published?

CVE-2021-34055 was published on 2022-11-04 and last updated on 2026-06-17.

CVE-2021-34055

CVE-2021-34055 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Jhead Project Jhead
Published: 2022-11-04
Last modified: 2026-06-17

Description

jhead 3.06 is vulnerable to Buffer Overflow via exif.c in function Put16u.

Frequently asked questions

What is CVE-2021-34055?: jhead 3.06 is vulnerable to Buffer Overflow via exif.c in function Put16u.
How severe is CVE-2021-34055?: CVE-2021-34055 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-2021-34055 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34055?: CVE-2021-34055 primarily affects Jhead Project Jhead. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-34055?: 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-2021-34055 published?: CVE-2021-34055 was published on 2022-11-04 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:jhead_project:jhead:3.06:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

More vulnerabilities in Jhead Project Jhead

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CVE-2021-28278 — High (CVSS 7.8): A Heap-based Buffer Overflow vulnerability exists in jhead 3.04 and 3.05 via the RemoveSectionType function in…
CVE-2021-28277 — High (CVSS 7.8): A Heap-based Buffer Overflow vulnerabilty exists in jhead 3.04 and 3.05 is affected by: Buffer Overflow via the…
CVE-2021-3496 — High (CVSS 7.8): A heap-based buffer overflow was found in jhead in version 3.06 in Get16u() in exif.c when processing a crafted file.

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