CVE-2026-78455
Xbox Information Disclosure Vulnerability
Out-of-bounds read in Xbox allows an unauthorized attacker to disclose information with a physical attack.
Attack profile
How easy it is to exploit
- Attack vector
- Physical
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Xbox Information Disclosure Vulnerability
Out-of-bounds read in Xbox allows an unauthorized attacker to disclose information with a physical attack.
- Record
CVE-2026-78455- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:P/AC:L/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-2026-73806
Out-of-bounds read in Xbox allows an unauthorized attacker to disclose information with a physical attack.
- Record
EUVD-2026-73806- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-10
GitHub AdvisoriesGHSA-g6jj-w8j5-9jjr
Out-of-bounds read in Xbox allows an unauthorized attacker to disclose information with a...
Out-of-bounds read in Xbox allows an unauthorized attacker to disclose information with a physical attack.
- Record
GHSA-g6jj-w8j5-9jjr- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-125
- Updated
- 2026-11-02
NVD
Out-of-bounds read in Xbox allows an unauthorized attacker to disclose information with a physical attack.
- Record
CVE-2026-78455- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-125
- Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1607
- microsoft windows 10 version 1809
- microsoft windows 10 version 21h2
- microsoft windows 10 version 22h2
- microsoft windows 11 version 23h2
- microsoft windows 11 version 24h2
- microsoft windows 11 version 25h2
- microsoft windows 11 version 26h1
- microsoft windows server 2016
- microsoft windows server 2016 (server core installation)
- microsoft windows server 2019
- microsoft windows server 2019 (server core installation)
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | CVE List | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-78455 is a medium vulnerability (CVSS 4.3) in Microsoft Windows 10 Version 1607, published September 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. No source names a fixed version.