CVE-2026-62911: high-severity vulnerability in Microsoft Exchange Server 2016 Cumulative…
Microsoft Exchange Server Elevation of Privilege Vulnerability
Published · Updated
46Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8epss 0.7%
from disclosure to weapon11 days
Published on NVDAug 11
1st PoC+11d
exploitation probability
0.7%top 48% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
Authentication bypass by capture-replay in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Microsoft Exchange Server 2016 Cumulative Update 23Microsoft · Microsoft Exchange Server 2019 Cumulative Update 14Microsoft · Microsoft Exchange Server 2019 Cumulative Update 15Microsoft · Microsoft Exchange Server Subscription Edition RTMpublic PoCs found — 2
githubgithub.com/hypnguyen1209/CVE-2026-62911★ 185githubgithub.com/ZeroDayEvil/CVE-2026-62911★ 23⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Microsoft Exchange Server 2016 Cumulative…
In the same product, most dangerous first.
CVE-2022-41082HIGHMicrosoft Exchange Server Remote Code Execution VulnerabilityEPSS 100.0%KEVCVE-2022-41040HIGHMicrosoft Exchange Server Elevation of Privilege VulnerabilityEPSS 100.0%KEVCVE-2022-41080HIGHMicrosoft Exchange Server Elevation of Privilege VulnerabilityEPSS 77.3%KEVCVE-2023-21529HIGHMicrosoft Exchange Server Remote Code Execution VulnerabilityEPSS 59.3%KEVCVE-2024-21410CRITICALMicrosoft Exchange Server Elevation of Privilege VulnerabilityEPSS 12.6%KEVCVE-2026-42897HIGHMicrosoft Exchange Server Spoofing VulnerabilityEPSS 0.5%KEV