CVE-2026-39908 (GCVE-0-2026-39908)
Vulnerability from cvelistv5 – Published: 2026-06-08 16:47 – Updated: 2026-07-14 20:00 X_Open Source
VLAI
EPSS
VEX
Title
OpenBullet2 0.3.2 NTLMv2 Hash Disclosure via UNC Path Proxy Source
Summary
OpenBullet2 through version 0.3.2 on Windows contains a credential disclosure vulnerability that allows remote attackers to capture the NTLMv2 hash of the process user by configuring a job proxy source with a UNC path pointing to an attacker-controlled server. When the job starts, the application attempts to load proxies from the UNC path, triggering an SMB authentication attempt that discloses the NTLMv2 hash, which can then be relayed or cracked offline.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-08 18:06 UTC
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://hackernoon.com/one-empty-header-to-admin-… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/openbullet2-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| openbullet | openbullet2 |
Affected:
0 , ≤ 0.3.2
(semver)
|
Date Public
2026-06-05 00:00
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