What’s Vulnerable › Vulnerabilities

CVE-2021-20307

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-05 · updated 2026-06-17
• Weakness: CWE-134

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.

Affected products

• Debian Linux: 9.0
• Fedoraproject Fedora: 32, 33, 34
• libpano13: through 2.9.19; 2.9.20-rc1, 2.9.20-rc2

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1946284
• https://lists.debian.org/debian-lts-announce/2021/04/msg00010.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FVJRXUOBN56ZWP6QQ3NTA6DIFZMDZAEQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JE6YZSXNVD6WZ3AG3ENL2DIHQFF24LYX/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VYDYBKHT2MNMQCUMAVJNZW4VH6MD5BOF/
• https://security.gentoo.org/glsa/202107-47
• https://sourceforge.net/projects/panotools/files/libpano13/libpano13-2.9.20/
• https://bugzilla.redhat.com/show_bug.cgi?id=1946284
• https://lists.debian.org/debian-lts-announce/2021/04/msg00010.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FVJRXUOBN56ZWP6QQ3NTA6DIFZMDZAEQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JE6YZSXNVD6WZ3AG3ENL2DIHQFF24LYX/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VYDYBKHT2MNMQCUMAVJNZW4VH6MD5BOF/

Get alerted when CVE-2021-20307 or the next vulnerability affects your stack