NULL pointer dereference in Ansilove Libansilove
CVE-2026-111144
libansilove 1.3.0 through 1.4.2 contains a NULL pointer dereference vulnerability in ansilove_xbin() that allows attackers to crash applications by supplying a crafted XBIN file. Attackers can set the 512-character flag without the custom-font flag, causing drawchar() to index a NULL high_font_data_xbin pointer and terminate the process.
Published .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind-pwn/libansilove-xbin-rle-oob-read-and-null-font-deref (technical-description, exploit)
- github.com/ansilove/libansilove/blob/f1b05447aa566aa4eef9b05ebf8c2aaf1e379cd3/s… (technical-description)
- github.com/ansilove/libansilove/blob/f1b05447aa566aa4eef9b05ebf8c2aaf1e379cd3/s… (technical-description)
- github.com/ansilove/libansilove/blob/f1b05447aa566aa4eef9b05ebf8c2aaf1e379cd3/s… (technical-description)
- github.com/ansilove/libansilove (product)
- www.vulncheck.com/advisories/libansilove-1.3.0-through-1.4.2-null-pointer-deref… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111144?
- CVE-2026-111144 is a medium-severity vulnerability in Ansilove Libansilove, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-10-15.
- How severe is CVE-2026-111144?
- Medium severity. CVSS v3 base score is 5.5 out of 10.