CVE-2026-62910
HIGH 7.2Improper control of resource identifiers ('resource injection') in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Severe if exploited (CVSS 7.2), but no known exploitation and low modeled probability. Patch on a normal cadence.
Exploitation likelihood
0.7%chance of exploitation in 30 days · 50th percentile
Impact if exploited
7.2CVSS 3.1 · HIGH
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ⚠Privileges: Requires an admin / high-privilege account
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept & exploit code
- github-search Search GitHub for public PoC repos
Test against your own equipment
curl -s https://vulnpedia.com/cve/CVE-2026-62910/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-62910/poc.json
Affected
Vendors Microsoft
Products Microsoft Exchange Server 2016 Cumulative Update 23 Microsoft Exchange Server 2019 Cumulative Update 14 Microsoft Exchange Server 2019 Cumulative Update 15 Microsoft Exchange Server Subscription Edition Rtm Exchange Server Exchange Server Subscription Edition
Weakness (CWE)
- CWE-99: : Improper Control of Resource Identifiers ('Resource Injection')
CVSS vector
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
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2016 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server | 2019 |
| Microsoft | Exchange Server Subscription Edition | < 15.02.2562.046 |
All CVSS metrics
- HIGH 7.2 v3.1 · CNA Primary
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 - HIGH 7.2 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - HIGH 8.8 v3.1 · NVD Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H