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
EchelonGraph scoreMEDIUM confidence
“—” beside the score: it is equal to the CVSS score beside it.
This medium-severity CVE scores 5.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (3rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Also known asEUVD-2026-84467 (ENISA EUVD)Source: ENISA EUVD
5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.5Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 5.5
- EG Score
- 5.5MEDIUMmedium confidence
- EG Risk
- 25EG Risk 25/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity55% × 45%Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.1% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 0.1%
- EPSS %ILE
- 3rd
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
- EG Likelihood
- 0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
September 22, 2026
Last Modified
September 26, 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 advisoryMentions a patch (unverified)
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 7× in last 7d / 45× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
- 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-30 01:55 UTCOSV refresh
- 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
- 2026-10-25 13:58 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-22 13:46 UTCEG score recompute
- 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-18 03:09 UTCEG score recompute
- 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-12 14:56 UTCEG score recompute
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- 2026-10-11 19:20 UTCEG score recompute
- 2026-10-11 16:36 UTCEG score recompute
- 2026-10-11 13:54 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-11 03:36 UTCEG score recompute
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-10 03:20 UTCEG score recompute
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-09 03:06 UTCEG score recompute
- 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-08 02:54 UTCEG score recompute
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-07 02:42 UTCEG score recompute
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-06 02:30 UTCEG score recompute
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-05 02:18 UTCEG score recompute
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-04 02:05 UTCEG score recompute
- 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-03 01:53 UTCEG score recompute
- 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-02 01:41 UTCEG score recompute
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-10-01 01:27 UTCEG score recompute
- 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-09-30 01:15 UTCEG score recompute
- 2026-09-29 01:00 UTCEG score recompute
- 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-09-28 00:48 UTCEG score recompute
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-09-27 00:35 UTCEG score recompute
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
- 2026-09-26 00:23 UTCEG score recompute
- 2026-09-25 23:35 UTCEG score recompute
- 2026-09-24 18:39 UTCEG score recompute
- 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 5th percentile
- 2026-09-23 18:26 UTCEG score recompute
- 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 6th percentile
- 2026-09-22 16:20 UTCEG score recompute
- 2026-09-22 15:19 UTCEG score recomputeFirst assessed: 5.5 MEDIUM
- 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-severity vulnerability; its CVE record was 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 the CVE record for CVE-2026-81880 published?
The CVE record for CVE-2026-81880 was published on September 22, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 26, 2026; the record at its source may have been updated since.
Is CVE-2026-81880 actively exploited?
CVE-2026-81880 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81880?
CVE-2026-81880 has a CVSS base score of 5.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-81880?
A fix for CVE-2026-81880 is available: update to the fixed version the vendor names in its advisory.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-81880
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