🛡️ CVE-2026-45639 — remote-desktop-client
Description
Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.
Weakness class
CVE-2026-45639 is classified as CWE-125: Out-of-bounds Read. The code reads past the limits of a buffer, exposing adjacent memory contents or crashing the process.
Affected software
CVE-2026-45639 is recorded against 16 packages.
- remote-desktop-client (fixed in 1.2.7214)
- unknown
- windows-10-1607 (fixed in 10.0.14393.9234)
- windows-10-1809 (fixed in 10.0.17763.8880)
- windows-10-21h2 (fixed in 10.0.19044.7417)
- windows-10-22h2 (fixed in 10.0.19045.7417)
- windows-11-23h2 (fixed in 10.0.22631.7219)
- windows-11-24h2 (fixed in 10.0.26100.8655)
- windows-11-25h2 (fixed in 10.0.26200.8655)
- windows-11-26h1 (fixed in 10.0.28000.2269)
- windows-app (fixed in 2.0.1193.0)
- windows-server-2012
- windows-server-2016 (fixed in 10.0.14393.9234)
- windows-server-2019 (fixed in 10.0.17763.8880)
- windows-server-2022 (fixed in 10.0.20348.5256)
- windows-server-2025 (fixed in 10.0.26100.32995)
Timeline and source
Published on 9 June 2026 and last revised on 23 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.
References
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| remote-desktop-client | — | 1.2.7214 |
| unknown | — | — |
| windows-10-1607 | — | 10.0.14393.9234 |
| windows-10-1809 | — | 10.0.17763.8880 |
| windows-10-21h2 | — | 10.0.19044.7417 |
| windows-10-22h2 | — | 10.0.19045.7417 |
| windows-11-23h2 | — | 10.0.22631.7219 |
| windows-11-24h2 | — | 10.0.26100.8655 |
| windows-11-25h2 | — | 10.0.26200.8655 |
| windows-11-26h1 | — | 10.0.28000.2269 |
| windows-app | — | 2.0.1193.0 |
| windows-server-2012 | — | — |
| windows-server-2016 | — | 10.0.14393.9234 |
| windows-server-2019 | — | 10.0.17763.8880 |
| windows-server-2022 | — | 10.0.20348.5256 |
| windows-server-2025 | — | 10.0.26100.32995 |
References
Similar Threats
- High CVE-2026-42913
- High CVE-2026-42909
- High CVE-2026-42985
- High CVE-2026-44799
- High CVE-2026-32157
More CVE 2026 advisories
Browse all of CVE 2026 in the advisory index.
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