CVE catalog
CVE-2026-39836
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.63% · Oct 25, 2026
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | golang-1.19 | bookworm | 1.19.8-2 | not affected |
| Cpe | go | Not reported | 1.25.10 | fixed |
| Cpe | go | Not reported | 1.26.3 | fixed |
| Cpe | go | Not reported | 1.26.3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | golang-1.19 | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Cpe | go | cpe | Not reported | 1.25.10 | Not reported | Not reported | Not reported |
| Cpe | go | cpe | Not reported | 1.26.3 | Not reported | Not reported | Not reported |
| Cpe | go | cpe | Not reported | 1.26.3 | Not reported | NVD-CVE-2026-39836 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [golang-1.19]Not affected
Details (2)
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
- [golang-1.19-doc]Not affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
- [golang-1.19-go]Not affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· amd64 · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· arm64 · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
- [golang-1.19-src]Not affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_21254-1.json]
- [https://go.dev/cl/775320]
- [https://go.dev/issue/79006]
- [https://groups.google.com/g/golang-announce/c/qcCIEXso47M]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-39836]
- [https://pkg.go.dev/vuln/GO-2026-4971]
- [https://security-tracker.debian.org/tracker/CVE-2026-39836]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39836.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2455.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]