CVE-2026-73282: In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.
CSIRTS triage
- What
- Use-after-free in ssh when realloc occurs during concurrent remote-forwarding operations.
- Who is affected
- Deployments running OpenSSH versions before 10.5 are affected.
- Urgency
- Medium severity (CVSS 4.8) requiring specific operational conditions for exploitation; patch within standard maintenance windows.
- Action
- Upgrade OpenSSH to version 10.5 or later.
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-2026-73282
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-2026-732820.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-73282 | coverage & exploitation status | NVD · CVE.org |
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