CVE-2026-62915
Microsoft Exchange Server Security Feature Bypass Vulnerability
Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature 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
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Exchange Server Security Feature Bypass Vulnerability
Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.
- Record
CVE-2026-62915- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C - Weakness
- CWE-862
- Updated
- 2026-11-02
EUVDEUVD-2026-56417
Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.
- Record
EUVD-2026-56417- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-255v-3pqf-6g77
Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a...
Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.
- Record
GHSA-255v-3pqf-6g77- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
NVD
Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.
- Record
CVE-2026-62915- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-862
- 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-2026-62915 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 0.64%, the 51st percentile. No source names a fixed version.