HIGH
CVE-2026-45635
CWE-843Published: June 9, 2026· Updated: Jun 11, 2026
8.1
CVSS v3.1
EPSS:0.36%probability of exploitation in 30 daysPercentile:58.6th
Official Description
Use after free in Universal Plug and Play (upnp.dll) allows an unauthorized attacker to execute code over a network.
Technical Analysis
CVE-2026-45635 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 complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
Microsoft13 products
windows 10 1607windows 10 1809windows 10 21h2windows 10 22h2windows 11 23h2windows 11 24h2windows 11 25h2windows 11 26h1windows server 2012windows server 2016windows server 2019windows server 2022+1 more
Source: NVD CPE · 14 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 (1)
Quick Facts
CVE IDCVE-2026-45635
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-843
CISA KEVNo
EPSS (30d)0.36%
Affected1 vendor
PublishedJun 9, 2026
Related CVEs (CWE-843)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-45635 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.