CVE-2026-45504
HIGHCVSS 8.8/10EPSS 0.85%
Last modified
CVE-2026-45504 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.
Description
Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Microsoft | Exchange Server | 2016 | Cumulative Update 23 |
| Microsoft | Exchange Server | 2019 | Cumulative Update 14 |
| Microsoft | Exchange Server Subscription Edition | < 15.02.2562.043 | — |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-45504?
Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
How severe is CVE-2026-45504?
CVE-2026-45504 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.
How do I fix CVE-2026-45504?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
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Are you affected by CVE-2026-45504?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST