CVE-2026-121678
Windows Remote Desktop Client Information Disclosure Vulnerability
CVE-2026-121678 is a medium vulnerability (CVSS 5.3) in Microsoft Windows App Client For Windows Desktop, published November 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.69%, the 53rd percentile. No source names a fixed version.
- Severity
- 5.3 MediumCVSS 3.1, CVE List
- Exploit chance
- 0.69%EPSS, 53rd percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
Affected products
What each source reports
CVE List Score used
Windows Remote Desktop Client Information Disclosure Vulnerability
Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
- Record
CVE-2026-121678- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Weakness
- CWE-125
- Updated
- 2026-11-10
EUVDEUVD-2026-122482
Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
- Record
EUVD-2026-122482- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-11
GitHub AdvisoriesGHSA-8mqf-hm3x-p7qf
Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose...
Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
- Record
GHSA-8mqf-hm3x-p7qf- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-125
- Updated
- 2026-11-10
NVD
Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
- Record
CVE-2026-121678- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-125
- Updated
- 2026-11-11
History
| Recorded | Changed | Sources |
|---|---|---|
| published | EUVD | |
| published | EUVD, NVD | |
| aliases, references | GitHub Advisories | |
| cwes, references, severity, title | CVE List | |
| first indexed | EUVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.