CVE-2026-85234 tftp-hpa - Denial of Service

tftp-hpa contains an out-of-bounds read/write vulnerability caused by invalid match offsets passed to genmatchstring() in the in.tftpd remap engine when processing inverse remap rules with custom error messages, letting remote unauthenticated attackers cause denial of service.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.47% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-125

Vendor fix

Update to the latest version of tftp-hpa.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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