CVE-2020-35523 Integer overflow in libtiff

What is CVE-2020-35523?

CVE-2020-35523 is a high-severity vulnerability in Debian Debian Linux, published on 9 Mar 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

An integer overflow flaw was found in libtiff that exists in the tif_getimage.c file. This flaw allows an attacker to inject and execute arbitrary code when a user opens a crafted TIFF file. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Weakness: CWE-190

Which versions are affected by CVE-2020-35523?

It affects 4 products.

Products include Debian Debian Linux, Libtiff Libtiff, Netapp Ontap Select Deploy Administration Utility, Redhat Enterprise Linux.

How do I fix CVE-2020-35523?

Apply the vendor's patch.

Is CVE-2020-35523 being exploited?

There is no known exploitation of CVE-2020-35523 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2020-35523, AZL-44196, AZL-6654, DEBIAN-CVE-2020-35523, GHSA-5v72-4q26-mq7p, JLSEC-2025-257 and 1 more.