Product
4 published CVES affecting debian/fbi, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
Newest publication first
The fbgs framebuffer Postscript/PDF viewer in fbi before 2.01 has a typo that prevents a filter from working correctly, which allows user-assisted attackers to bypass the filter and execute malicious Postscript commands.
The fbgs script in the fbi package 2.01-1.4, when the TMPDIR environment variable is not defined, allows local users to overwrite arbitrary files via a symlink attack on temporary files in /var/tmp/fbps-[PID].
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.