HIGH
CVE-2026-39836
Published: May 7, 2026· Updated: May 13, 2026
7.5
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:0.7th
Official Description
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
Technical Analysis
CVE-2026-39836 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Go1 product
go
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (4)
→
→
https://go.dev/issue/79006Issue Tracking
→
https://groups.google.com/g/golang-announce/c/qcCIEXso47MIssue Tracking · Mailing List
→
https://pkg.go.dev/vuln/GO-2026-4971Vendor Advisory
Quick Facts
CVE IDCVE-2026-39836
CVSS Score7.5 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedMay 7, 2026
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-39836 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.