CVE-2021-20307 Memory corruption in libpano13

What is CVE-2021-20307?

CVE-2021-20307 is a critical memory corruption vulnerability in Debian Debian Linux, published on 5 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values.

Weakness: CWE-134

Which versions are affected by CVE-2021-20307?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Libpano13 Project Libpano13.

How do I fix CVE-2021-20307?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-20307 being exploited?

There is no known exploitation of CVE-2021-20307 in the wild and no public exploit code.

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• 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 DEBIAN-CVE-2021-20307, DLA-2624-1, GHSA-jj4v-f22v-8gx6, MGASA-2021-0230, UBUNTU-CVE-2021-20307, openSUSE-SU-2024:10968-1.