CVE-2026-6846: Binutils: binutils: arbitrary code execution via malformed xcoff object file processing
CSIRTS triage
- What
- Arbitrary code execution occurs when processing malformed XCOFF object files due to unsafe pointer dereference or buffer overflow.
- Who is affected
- Systems using binutils tools (objdump, nm, readelf, etc.) to process untrusted XCOFF binaries.
- Urgency
- High severity with CVSS 7.8; remote exploitation is possible if untrusted binaries are processed.
- Action
- Update binutils to a patched version that validates XCOFF file structure.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-6846
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-68460.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-6846 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[UPDATE] [high] binutils: Multiple vulnerabilitiescert-bund