CVE-2026-39824 Affecting tailscale package, versions <1.98.5-r1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-MINIMOSLATEST-TAILSCALE-17434062
- published24 Jun 2026
- disclosed22 May 2026
Introduced: 22 May 2026
CVE-2026-39824 (opens in a new tab)How to fix?
Upgrade Minimos:latest tailscale to version 1.98.5-r1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream tailscale package and not the tailscale package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
NewNTUnicodeString does not check for string length overflow. When provided with a string that overflows the maximum size of a NTUnicodeString (a 16-bit number of bytes), it returns a truncated string rather than an error.
References
- https://www.cve.org/CVERecord?id=CVE-2026-39824
- https://github.com/advisories/GHSA-4vpj-hr3r-4gpg
- https://osv.dev/vulnerability/MINI-8pg9-r876-xq59
- https://osv.dev/vulnerability/CVE-2026-39824
- https://go.dev/cl/770080
- https://go.dev/issue/78916
- https://groups.google.com/g/golang-announce/c/6MMI8Lj-Atg
- https://pkg.go.dev/vuln/GO-2026-5024