[UPDATE] [high] Samba: Multiple vulnerabilities
An attacker can exploit multiple vulnerabilities in Samba to execute arbitrary code, conduct a denial of service attack, manipulate files, and bypass security measures.
CSIRTS triage
- What
- Multiple vulnerabilities in Samba allow an attacker to execute arbitrary code, conduct denial of service attacks, manipulate files, and bypass security measures.
- Who is affected
- Deployments of Samba are affected by these vulnerabilities.
- Urgency
- Remediation is urgent due to the critical severity of the vulnerabilities, although they are not currently exploited.
- Action
- Update to the latest version of Samba to mitigate these vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1686
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-2026-19330.86% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 54% of all scored CVEs.
- Low exploitation riskCVE-2026-23400.94% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 57% of all scored CVEs.
- Low exploitation riskCVE-2026-30120.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all scored CVEs.
- Moderate exploitation riskCVE-2026-32382.7% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 84% of all scored CVEs.
- Moderate exploitation riskCVE-2026-44082.5% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 83% of all scored CVEs.
- Elevated exploitation riskCVE-2026-448012.8% 30-day exploitation probability — well above the norm. Schedule remediation this cycle. Riskier than 96% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-1933 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-2340 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-3012 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-3238 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-4408 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-4480 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Samba
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- criticalexploitedCVE-2017-7494: Samba Remote Code Execution Vulnerabilitycisa-kev · 2023-03-30
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