CVE-2023-50671: In exiftags 1.01, nikon_prop1 in nikon.c has a heap-based buffer overflow (write of size 28) because snprintf

This month

HIGH 7.8DOWNGRADE

CVE-2023-50671 is a high-severity flaw (CVSS 7.8) affecting exiftags. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-787
Published	2024-01-11
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: aertherwide

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-01-11 17:15 UTCPublished CVE record published
2026-06-17 06:39 UTCUpdated Record last modified

aertherwide exiftags DOWNGRADE

Affected: 1.01

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.01

1. Check installed version

apt-cache policy exiftags || rpm -q exiftags || exiftags --version

2. No fixed release: DOWNGRADE to a release before 1.01 (Debian / Ubuntu)

apt-cache madison exiftags sudo apt install exiftags=<VERSION_BEFORE_1.01> sudo apt-mark hold exiftags

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list exiftags sudo dnf downgrade exiftags-<VERSION_BEFORE_1.01> sudo dnf versionlock add exiftags

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-50671?

exiftags: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-50671 being exploited?

CVE-2023-50671 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-50671 affect?

CVE-2023-50671 affects exiftags. Severity is high (CVSS 7.8). 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.

How urgent is CVE-2023-50671?

Priority 40/100. High severity; Public exploit reference

Related CVEs

CVE-2024-42851 HIGH 7.8 UPGRADE Buffer Overflow vulnerability in open source exiftags v.1.01 allows a local attacker to execute arbitrary code

References

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