CVE-2026-81880
📛 CVE Title
radare2: Uncontrolled resource consumption in radare2 PEF loader
Description
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.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- GitHub_M
- CVSS severity
- MEDIUM
- CVSS score
- 5.5 / 10
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H- Effective score
- 5.5 / 10 MEDIUM source: CNA overview
- CWE(s)
-
CWE-400,CWE-834 - Reserved
- 2026-08-27
- Published
- 2026-09-22 15:09 UTC
- Last updated
- 2026-09-22 15:09 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/81xxx/CVE-2026-81880.json
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-09-22 16:18:02 UTC
- NVD last modified
- 2026-09-22 16:18:02 UTC
- NVD CVSS v3.1
- 5.5 / 10 MEDIUM source: security-advisories@github.com
- NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H- Exploitability subscore
- 1.8 / 10
- Impact subscore
- 3.6 / 10
NVD / KEV / EPSS data refreshed 2026-09-23 02:38 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-84467 - Assigner
- GitHub_M
- Published
- Sep 22, 2026, 3:09:48 PM
- Updated
- Sep 22, 2026, 3:09:48 PM
- EUVD base score (CVSS 3.1)
-
5.5 / 10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - EUVD-reported EPSS
- 0.0000
- Vendors
- radareorg
- Products
-
radare2 (< 6.2.0)
ENISA description: 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.
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| radareorg | radare2 |
< 6.2.0 (affected)
|
— |
Vendor references (3)
References embedded in the original CVE record by the assigning CNA.
- https://github.com/radareorg/radare2/security/advisories/GHSA-fg6f-rj8g-25pq x_refsource_CONFIRM
- https://github.com/radareorg/radare2/commit/87c780e29ee6251cebaab51585d14482cb7740ac x_refsource_MISC
- https://github.com/radareorg/radare2/releases/tag/6.2.0 x_refsource_MISC
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
NVD-tagged references (3)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://github.com/radareorg/radare2/commit/87c780e29ee6251cebaab51585d14482cb7740ac security-advisories@github.com
- https://github.com/radareorg/radare2/releases/tag/6.2.0 security-advisories@github.com
- https://github.com/radareorg/radare2/security/advisories/GHSA-fg6f-rj8g-25pq security-advisories@github.com
Remediations (10)
-
web:connect.tenable.com
On September 8, Microsoft released its September 2026 Patch Tuesday release which patched 964 CVEs with 104 rated critical and 860 rated as important. This update includes patches for two zero-days that were exploited in the wild.
2026-09-23 15:43 UTC -
web:cvefeed.io
The following list is the news that have been mention CVE-2026-81880 vulnerability anywhere in the article. Results are limited to the first 20 news articles due to potential performance issues. The following table lists the changes that have been made to the CVE-2026-81880 vulnerability over time.
2026-09-23 15:43 UTC -
web:msrc.microsoft.com
The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.
2026-09-23 15:43 UTC -
web:msrc.microsoft.com
Security Update Guide - Microsoft Security Response Center
2026-09-23 15:43 UTC -
web:senserva.com
Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.
2026-09-23 15:43 UTC -
web:socprime.com
CVE - 2026 -85880 and CVE - 2026 -81963 Mitigation Microsoft released security updates addressing both actively exploited vulnerabilities on September 8, 2026 . Because exploitation has already been observed in the wild, organizations should prioritize these updates rather than treating them as part of the normal vulnerability management cycle.
2026-09-23 15:43 UTC -
web:support.microsoft.com
This out-of-band (OOB) update for Windows 11, version 25H2 and Windows 11, version 24H2 (KB5121768) is cumulative. It includes all improvements from previous security and non-security updates, along with an additional fix . Improvements This OOB update includes the following improvement: [System Performance] This update addresses an issue affecting a limited number of devices with an Intel ...
2026-09-23 15:43 UTC -
web:www.rapid7.com
CVE-2026-81880 : radareorg radare2: radare2 is a UNIX-like reverse engineering framework and command-line toolset. View severity, references, and remediation details from Rapid7.
2026-09-23 15:43 UTC -
web:www.securityweek.com
Microsoft on Tuesday rolled out a record number of patches, fixing 974 CVEs across its products, including two vulnerabilities exploited in the wild as zero-days. The first exploited zero-day, CVE - 2026 -85880, is a heap buffer overflow issue in the Windows Advanced Local Procedure Call (ALPC) that could allow a local attacker to gain System privileges. "An attacker who can execute code in a ...
2026-09-23 15:43 UTC -
web:www.tenable.com
Microsoft patched 964 CVEs in September, the most ever in a Patch Tuesday release in its history, including two zero-day vulnerabilities exploited in the wild.
2026-09-23 15:43 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-81880.json.
{
"containers": {
"cna": {
"affected": [
{
"product": "radare2",
"vendor": "radareorg",
"versions": [
{
"status": "affected",
"version": "< 6.2.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400: Uncontrolled Resource Consumption",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-834",
"description": "CWE-834: Excessive Iteration",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-22T15:09:48.887Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/radareorg/radare2/security/advisories/GHSA-fg6f-rj8g-25pq",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/radareorg/radare2/security/advisories/GHSA-fg6f-rj8g-25pq"
},
{
"name": "https://github.com/radareorg/radare2/commit/87c780e29ee6251cebaab51585d14482cb7740ac",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/radareorg/radare2/commit/87c780e29ee6251cebaab51585d14482cb7740ac"
},
{
"name": "https://github.com/radareorg/radare2/releases/tag/6.2.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/radareorg/radare2/releases/tag/6.2.0"
}
],
"source": {
"advisory": "GHSA-fg6f-rj8g-25pq",
"discovery": "UNKNOWN"
},
"title": "radare2: Uncontrolled resource consumption in radare2 PEF loader"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-81880",
"datePublished": "2026-09-22T15:09:48.887Z",
"dateReserved": "2026-08-27T17:48:42.122Z",
"dateUpdated": "2026-09-22T15:09:48.887Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}