CVE-2026-62994: CoreDNS `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin
CSIRTS triage
- What
- The `k8s_external` headless AXFR can emit an empty transfer batch that panics the `transfer` plugin.
- Who is affected
- Deployments of CoreDNS using the `k8s_external` headless AXFR feature.
- Urgency
- Remediation is low urgency as the severity is low and exploitation is not reported.
- Action
- No specific action is required at this time.
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-2026-62994
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-2026-629940.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-62994 | coverage & exploitation status | NVD · CVE.org |
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