Microsoft Exchange Server Elevation of Privilege Vulnerability
Summary
| CVE | CVE-2026-62910 |
|---|---|
| State | PUBLISHED |
| Assigner | microsoft |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-11 17:18:44 UTC |
| Updated | 2026-08-14 15:27:01 UTC |
| Description | Improper control of resource identifiers ('resource injection') in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network. |
Risk And Classification
Primary CVSS: v3.1 8.8 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.006970000 probability, percentile 0.497990000 (date 2026-08-12)
Problem Types: CWE-99 | CWE-99 CWE-99: Improper Control of Resource Identifiers ('Resource Injection')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 8.8 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | [email protected] | Secondary | 7.2 | HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSS | 7.2 | HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Microsoft | Exchange Server | 2016 | - | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_1 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_10 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_11 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_12 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_13 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_14 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_15 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_16 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_17 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_18 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_19 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_2 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_20 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_21 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_22 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_3 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_4 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_5 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_6 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_7 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_8 | All | All |
| Application | Microsoft | Exchange Server | 2016 | cumulative_update_9 | All | All |
| Application | Microsoft | Exchange Server | 2019 | - | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_1 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_10 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_11 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_12 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_13 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_2 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_3 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_4 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_5 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_6 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_7 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_8 | All | All |
| Application | Microsoft | Exchange Server | 2019 | cumulative_update_9 | All | All |
| Application | Microsoft | Exchange Server Subscription Edition | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | affected 15.01.0.0 15.01.2507.072 custom | x64-based Systems |
| CNA | Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 | affected 15.02.0.0 15.02.1544.044 custom | x64-based Systems |
| CNA | Microsoft | Microsoft Exchange Server 2019 Cumulative Update 15 | affected 15.02.0.0 15.02.1748.049 custom | x64-based Systems |
| CNA | Microsoft | Microsoft Exchange Server Subscription Edition RTM | affected 15.02.0.0 15.02.2562.046 custom | x64-based Systems |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62910 | [email protected] | msrc.microsoft.com | Patch, Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.