CVE-2025-59249

highpriority · track · 0EPSS 0.008 · 57 %ileDEEUNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.83% (57th) EPSS

CVSS 8.8 · high

Is it mine?

27 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedMicrosoft Exchange Server 2016 Cumulative Update 23msrc_csaf
15.01.2507.061:Security Update:https://support.microsoft.com/help/5066369
https://support.microsoft.com/help/5066369
FixedMicrosoft Exchange Server 2019 Cumulative Update 14msrc_csaf
15.02.1544.036:Security Update:https://support.microsoft.com/help/5066368
https://support.microsoft.com/help/5066368
FixedMicrosoft Exchange Server 2019 Cumulative Update 15msrc_csaf
15.02.1748.039:Security Update:https://support.microsoft.com/help/5066367
https://support.microsoft.com/help/5066367
FixedMicrosoft Exchange Server Subscription Edition RTMmsrc_csaf
15.02.2562.029:Security Update:https://support.microsoft.com/help/5066366
https://support.microsoft.com/help/5066366

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.8highAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · NCSC-NL NL

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1390USCWE-1390USCWE-1390USCWE-1390US

affected products (27)

Products and version ranges known to be affected.

Microsoft Exchange Server 2016 Cumulative Update 23all versionscert_bundDEcpe:/a:microsoft:exchange_server_2016:cumulative_update_23
Microsoft Exchange Server 2019 Cumulative Update 14all versionscert_bundDEcpe:/a:microsoft:exchange_server_2019:cumulative_update_14
Microsoft Exchange Server 2019 Cumulative Update 15all versionscert_bundDEcpe:/a:microsoft:exchange_server_2019:cumulative_update_15
Microsoft Exchange Server Subscription Edition RTMall versionscert_bundDEcpe:/a:microsoft:exchange:server_subscription_edition_rtm
Microsoft Microsoft Exchange Server 2016 Cumulative Update 2315.01.0.0 → 15.01.2507.061enisa_euvdEU
Microsoft Microsoft Exchange Server 2019 Cumulative Update 1415.02.0.0 → 15.02.1544.036enisa_euvdEU
Microsoft Microsoft Exchange Server 2019 Cumulative Update 1515.02.0.0 → 15.02.1748.039enisa_euvdEU
Microsoft Microsoft Exchange Server Subscription Edition RTM15.02.0.0 → 15.02.2562.029enisa_euvdEU
Microsoft Corp Microsoft Exchange Server 2016 Cumulative Update 23≤ 15.01.2507.061fstec_bduRU
Microsoft Corp Microsoft Exchange Server 2019 Cumulative Update 14≤ 15.02.1544.036fstec_bduRU
Microsoft Corp Microsoft Exchange Server 2019 Cumulative Update 15≤ 15.02.1748.039fstec_bduRU
Microsoft Corp Microsoft Exchange Server Subscription Edition RTM≤ 15.02.2562.029fstec_bduRU
Microsoft Microsoft Exchange Server 2016 Cumulative Update 23all versionsfixedmsrc_csafUS
Microsoft Microsoft Exchange Server 2016 Cumulative Update 23< 15.01.2507.061msrc_csafUS
Microsoft Microsoft Exchange Server 2019 Cumulative Update 14all versionsfixedmsrc_csafUS
Microsoft Microsoft Exchange Server 2019 Cumulative Update 14< 15.02.1544.036msrc_csafUS
Microsoft Microsoft Exchange Server 2019 Cumulative Update 15all versionsfixedmsrc_csafUS
Microsoft Microsoft Exchange Server 2019 Cumulative Update 15< 15.02.1748.039msrc_csafUS
Microsoft Microsoft Exchange Server Subscription Edition RTMall versionsfixedmsrc_csafUS
Microsoft Microsoft Exchange Server Subscription Edition RTM< 15.02.2562.029msrc_csafUS

showing 20 of 27

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2025-0312Kwetsbaarheden verholpen in Microsoft ExchangeNL2025-10-14csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in Exchange Server.
WID-SEC-W-2025-2280Microsoft Exchange: Mehrere SchwachstellenDeutsch2025-10-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Exchange Server 2016, Microsoft Exchange Server 2019 und Microsoft Exchange ausnutzen, um seine Privilegien zu erhöhen und Spoofing-Angriffe durchzuführen.
msrc_CVE-2025-59249Microsoft Exchange Server Elevation of Privilege Vulnerability2025-10-14csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund msrc_csaf ncsc_nl NVD CVE.org MITRE

published 2025-10-14modified 2026-10-18

references (4)

External citations — patches, advisories, analysis.

scry

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