Out-of-bounds Read in H. Peter Anvin Tftp-Hpa
CVE-2026-106026
tftp-hpa 5.4 before 6.0 contains an out-of-bounds read vulnerability in rewrite_string() in tftpd/remap.c that walks heap memory during jump label searches. Unauthenticated remote attackers can send read or write requests whose filename matches a remap jump rule to crash the forked in.tftpd request handler.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
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
- git.kernel.org/pub/scm/network/tftp/tftp-hpa.git/commit/ (patch)
- git.kernel.org/pub/scm/network/tftp/tftp-hpa.git/tree/tftpd/remap.c (technical-description)
- git.kernel.org/pub/scm/network/tftp/tftp-hpa.git/ (product)
- www.vulncheck.com/advisories/tftp-hpa-5.4-before-6.0-out-of-bounds-read-via-tft… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-106026?
- CVE-2026-106026 is a low-severity vulnerability in H. Peter Anvin Tftp-Hpa, classified under Out-of-bounds Read. CVSS score: 3.7/10. Published 2026-10-06.
- How severe is CVE-2026-106026?
- Low severity. CVSS v3 base score is 3.7 out of 10.