CVE-2026-88123
Role: DNS Server Denial of Service Vulnerability
Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Role: DNS Server Denial of Service Vulnerability
Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.
- Record
CVE-2026-88123- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Weakness
- CWE-125
- Updated
- 2026-11-10
EUVDEUVD-2026-100156
Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.
- Record
EUVD-2026-100156- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-10
GitHub AdvisoriesGHSA-h3m9-5wvp-m8hq
Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.
Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.
- Record
GHSA-h3m9-5wvp-m8hq- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
NVD
Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network.
- Record
CVE-2026-88123- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
Affected products
- microsoft windows server 2012
- microsoft windows server 2012 (server core installation)
- microsoft windows server 2012 r2
- microsoft windows server 2012 r2 (server core installation)
- microsoft windows server 2016
- microsoft windows server 2016 (server core installation)
- microsoft windows server 2019
- microsoft windows server 2019 (server core installation)
- microsoft windows server 2022
- microsoft windows server 2025
- microsoft windows server 2025 (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-2026-88123 is a medium vulnerability (CVSS 6.5) in Microsoft Windows Server 2012, published October 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.23%, the 69th percentile. No source names a fixed version.