radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Apple Preferred Executable Format loader was vulnerable because the PEF loader accepted relocSecCount values that were not bounded by the number of sections or complete relocation records in the input. The vulnerability is triggered by normal binary-format auto-detection of a small crafted Apple PEF file. The loader could perform up to 268,435,456 relocation-section iterations and repeated buffer operations after record offsets passed the end of the file. This can cause denial of service through excessive CPU consumption and prolonged processing. This issue is fixed in version 6.2.0.
CVE-2026-81880
MEDIUMPre-NVD 5.55.5—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 5.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 93% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.5
- EG Score
- 5.5(medium)
- EG Risk
- 29(Track)EG Risk 29/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity55% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 7%
- KEV
- Not listed
Published
September 22, 2026
Last Modified
September 23, 2026
Advisory Details (3)
Auto-updated Sep 22, 2026Patch available. Sources: github, github_commit, github_release.
github_release Patch Available
6.2.0
Patch available: radareorg/radare2 6.2.0
https://github.com/radareorg/radare2/releases/tag/6.2.0github_commit
commit 87c780e29ee6 (radareorg/radare2)
Fix landed in radareorg/radare2 commit 87c780e29ee6 — awaiting tagged release
https://github.com/radareorg/radare2/commit/87c780e29ee6251cebaab51585d14482cb7740acgithub Patch Available
Uncontrolled resource consumption in radare2 PEF loader · Advisory · radareorg/radare2 · GitHub
https://github.com/radareorg/radare2/security/advisories/GHSA-fg6f-rj8g-25pqWeakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 5× in last 7d / 5× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-23 18:26 UTCEG score recompute
- 2026-09-23 17:54 UTCEPSS rescore
- 2026-09-22 16:20 UTCEG score recompute
- 2026-09-22 15:19 UTCEG score recompute
- 2026-09-22 15:19 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-81880?
CVE-2026-81880 is a medium vulnerability published on September 22, 2026. radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Apple Preferred Executable Format loader was vulnerable because the PEF loader accepted relocSecCount values that were not bounded by the number of sections or complete relocation records in the…
When was CVE-2026-81880 disclosed?
CVE-2026-81880 was first published in the National Vulnerability Database on September 22, 2026, with the most recent update on September 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81880 actively exploited?
CVE-2026-81880 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 93.3% of all scored CVEs.
What is the CVSS score of CVE-2026-81880?
CVE-2026-81880 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-81880?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81880, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-81880
Is Your Infrastructure Affected by CVE-2026-81880?
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