CVE-2026-62912
Microsoft Exchange Server Denial of Service Vulnerability
Deserialization of untrusted data in Microsoft Exchange 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
Microsoft Exchange Server Denial of Service Vulnerability
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.
- Record
CVE-2026-62912- 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-502
- Updated
- 2026-11-02
EUVDEUVD-2026-56414
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.
- Record
EUVD-2026-56414- 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
- 2026-11-02
GitHub AdvisoriesGHSA-97wg-gxw5-r3h4
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to...
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.
- Record
GHSA-97wg-gxw5-r3h4- 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-502
- Updated
- 2026-11-02
NVD
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.
- Record
CVE-2026-62912- 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-502
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-62912 is a medium vulnerability (CVSS 6.5) in Microsoft Exchange Server, published August 11, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.98%, the 80th percentile. No source names a fixed version.