LOW
CVE-2026-39824
Published: May 22, 2026· Updated: May 27, 2026
3.3
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.9th
Official Description
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.
Technical Analysis
CVE-2026-39824 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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GitHub PoC Search
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Rapid7 / Metasploit
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PacketStorm
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NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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All References (4)
Quick Facts
CVE IDCVE-2026-39824
CVSS Score3.3 / 10
SeverityLOW
CISA KEVNo
EPSS (30d)0.02%
PublishedMay 22, 2026
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-39824 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.