CVE-2026-50248: BOGUS configured primary hostname accepted for XFR in auth/rpz zones
CSIRTS triage
- What
- A bogus configured primary hostname is accepted for XFR in auth/rpz zones.
- Who is affected
- Deployments of CoreDNS with misconfigured primary hostnames.
- Urgency
- Remediation is medium urgency due to the medium severity and potential for misconfiguration.
- Action
- Review and correct primary hostname configurations.
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-2026-50248
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-2026-502480.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-50248 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
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