Reference page — cumulative record through Thursday, October 8, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-85234
Red Hat Red Hat Enterprise Linux 8 — Tftp: tftp-hpa: denial of service due to out-of-bounds read/write in remap engine
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U N N H 7.5 .0078 54.7 —
AFFECTED
Product Versions Fixed
Red Hat Enterprise Linux 8 unspecified 0:5.2-28.el8_10
Red Hat Enterprise Linux 10 unspecified —
Red Hat Enterprise Linux 6 unspecified —
Red Hat Enterprise Linux 7 unspecified —
Red Hat Enterprise Linux 9 unspecified —
Red Hat Hardened Images unspecified —
TIMELINE
Sep 3 Reserved by redhat
Sep 15 Published (CNA: redhat)
Oct 7 PATCH SHIPPED — CVE-2026-85234 (Red Hat Enterprise Linux 8). Fixed in Red Hat Enterprise Linux 8 0:5.2-28.el8_10.
Description
A flaw was found in tftp-hpa. When the `in.tftpd` remap engine processes an inverse remap rule that also aborts with a non-empty custom error message, it can pass invalid match offsets to the `genmatchstring()` function. This leads to out-of-bounds read/write operations. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted request, causing the daemon to crash and resulting in a denial of service.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| September 3, 2026 | Reserved | Reserved by redhat |
| September 15, 2026 | Published | Published (CNA: redhat) |
| October 7, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-85234 (Red Hat Enterprise Linux 8). Fixed in Red Hat Enterprise Linux 8 0:5.2-28.el8_10. |
Affected
Affected products and packages — 6 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Enterprise Linux 8 | — | — | 0:5.2-28.el8_10 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | — |
| Red Hat | Red Hat Hardened Images | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-85234 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Thursday, October 8, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
