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Fencer Vulns
high 7.8

CVE-2023-50671 json

In exiftags 1.01, nikon_prop1 in nikon.c has a heap-based buffer overflow (write of size 28) because snprintf can write to an unexpected ad…

published 2024-01-11 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-55448

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

In exiftags 1.01, nikon_prop1 in nikon.c has a heap-based buffer overflow (write of size 28) because snprintf can write to an unexpected address.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
23 mo ago

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • blog.yulun.ac.cn https://blog.yulun.ac.cn/posts/2023/fuzzing-exiftags/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.