Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-81885

CVE-2026-81885MEDIUM

radareorg radare2 — radare2: Infinite relocation-chain loop causes denial of service in radare2 NE parser

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   R  U  N  N  H    5.5   .0013    2.2     —

AFFECTED
  Product  Versions   Fixed
  radare2  < 6.2.0 –  —

TIMELINE
  Aug 27  Reserved by GitHub_M
  Sep 22  Published (CNA: GitHub_M)
  Sep 28  EXPLOIT PUBLISHED — CVE-2026-81885 (radareorg radare2). Public exploit reference added.

CWE-770, CWE-835 · CNA: GitHub_M · CVSS v3.1 · 5 references · NVD status: Analyzed

Description

radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's NE relocation fixup-chain parser was vulnerable because the NE relocation parser followed fixup chains without an active iteration limit or cycle detection. The vulnerability is triggered by opening a crafted NE executable whose in-bounds relocation entry points back to itself instead of reaching 0xffff. The parser repeatedly processed the same relocation and allocated another relocation object on each iteration. This can cause denial of service through continuous CPU and memory consumption. This issue is fixed in version 6.2.0.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 27, 2026	Reserved	Reserved by GitHub_M
September 22, 2026	Published	Published (CNA: GitHub_M)
September 28, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-81885 (radareorg radare2). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
radareorg	radare2	—	< 6.2.0	—

Weaknesses

CWE-770 · CWE-835

References (5)

https://github.com/radareorg/radare2/commit/93d794caa7c2f08413106255d49546e544c1f9f0 [Patch]
https://github.com/radareorg/radare2/issues/26225 [Exploit, Issue Tracking, Mitigation, Vendor Advisory]
https://github.com/radareorg/radare2/pull/26192 [Patch]
https://github.com/radareorg/radare2/releases/tag/6.2.0 [Release Notes]
https://github.com/radareorg/radare2/security/advisories/GHSA-43wr-4j49-rcxj [Patch, Vendor Advisory]

Authoritative record: CVE-2026-81885 at cve.org

Vendors: radareorg

Weaknesses: CWE-770 · CWE-835

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-81885 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 Saturday, October 3, 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.