CVE-2020-18773

Name: CVE-2020-18773
Creator: NVD / NIST
Published: 2021-08-23T22:15:27.807+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.33%

Last modified Jun 17, 2026

CVE-2020-18773 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.. EPSS estimates a 1.33% chance of exploitation in the next 30 days.

Description

An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.33%

67.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Exiv2	Exiv2	0.27.99.0

References

https://github.com/Exiv2/exiv2/issues/760Exploit, Third Party Advisory
https://security.gentoo.org/glsa/202312-06
https://github.com/Exiv2/exiv2/issues/760Exploit, 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-2020-18773?

An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a denial of service (DOS) via a crafted tif file.

How severe is CVE-2020-18773?

CVE-2020-18773 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.33% probability of exploitation in the next 30 days.

How do I fix CVE-2020-18773?

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-2020-18773?

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

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Source: NVD / NIST