CVE-2026-45639: microsoft remote_desktop_client Out-of-bounds Read
CVSS: 7.5v3.1HighAnalyzed
Published 09-06-2026Last modified 24-09-2026
Vulnerability summary
CVE-2026-45639 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in microsoft remote_desktop_client. EPSS estimates a 1.03% chance of exploitation in the next 30 days, higher than 63% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
1.03%
0%100%
Low · +0.16 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 09-06-2026PublishedVulnerability first disclosed.
- 24-09-2026Last modifiedVulnerability information updated.
Description
Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:CSourcesAll 2 agree
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
1.03%
Chance of exploitation in the next 30 days
Percentile
63%
Versus all other CVEs
30-day change
+0.16 pp
From 0.87% on 20-09-2026
20-09-202620-10-2026
EPSS score1.03%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft31 products
- remote_desktop_client< 1.2.7214
- remote desktop client for windows desktop≥ 1.2.0.0, < 1.2.7214.0
- windows_10_1607< 10.0.14393.9234
- windows_10_1809< 10.0.17763.8880
- windows_10_21h2< 10.0.19044.7417
1 vendor · 31 products
