CVE-2020-18771

Name: CVE-2020-18771
Creator: NVD / NIST
Published: 2021-08-23T22:15:26.15+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.85%

Last modified Jun 17, 2026

CVE-2020-18771 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Exiv2 0.27.99.0 has a global buffer over-read in Exiv2::Internal::Nikon1MakerNote::print0x0088 in nikonmn_int.cpp which can result in an information leak.. EPSS estimates a 1.85% chance of exploitation in the next 30 days.

Description

Exiv2 0.27.99.0 has a global buffer over-read in Exiv2::Internal::Nikon1MakerNote::print0x0088 in nikonmn_int.cpp which can result in an information leak.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

EPSS Probability

1.85%

76.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Exiv2	Exiv2	0.27.99.0
Debian	Debian Linux	10.0

References

https://cwe.mitre.org/data/definitions/126.htmlTechnical Description, Third Party Advisory
https://github.com/Exiv2/exiv2/issues/756Exploit, Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00004.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202312-06
https://cwe.mitre.org/data/definitions/126.htmlTechnical Description, Third Party Advisory
https://github.com/Exiv2/exiv2/issues/756Exploit, Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00004.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202312-06

Timeline

Published: Aug 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-18771?

Exiv2 0.27.99.0 has a global buffer over-read in Exiv2::Internal::Nikon1MakerNote::print0x0088 in nikonmn_int.cpp which can result in an information leak.

How severe is CVE-2020-18771?

CVE-2020-18771 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.85% probability of exploitation in the next 30 days.

How do I fix CVE-2020-18771?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-18771?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST