Out-of-bounds Read/Write in tftp-hpa Affects Remote Operations
CVE-2026-85234

7.5HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
15 September 2026

What is CVE-2026-85234?

A flaw in the tftp-hpa component can lead to out-of-bounds read and write operations when the in.tftpd remap engine processes an inverse remap rule with a non-empty custom error message. This may allow a remote and unauthenticated attacker to send specially crafted requests, potentially crashing the daemon and disrupting service availability.

References

https://access.redhat.com/security/cve/CVE-2026-85234
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2460997
issue-trackingx_refsource_REDHAT
https://git.kernel.org/pub/scm/network/tftp/tftp-hpa.git/...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered by Found by AISLE in partnership with Red Hat.
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