CVE-2025-25005

mediumpriority · track · 26EPSS 0.014 · 72 %ileDEEUNLRUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.41% (72nd) EPSS

CVSS 6.5 · medium

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

Improper input validation in Microsoft Exchange Server allows an authorized attacker to perform tampering 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
15.01.2507.058:Security Update:https://support.microsoft.com/help/5063223
https://support.microsoft.com/help/5063223
FixedMicrosoft Exchange Server 2019 Cumulative Update 14msrc_csaf
15.02.1544.033:Security Update:https://support.microsoft.com/help/5063222
https://support.microsoft.com/help/5063222
FixedMicrosoft Exchange Server 2019 Cumulative Update 15msrc_csaf
15.02.1748.036:Security Update:https://support.microsoft.com/help/5063221
https://support.microsoft.com/help/5063221
FixedMicrosoft Exchange Server Subscription Edition RTMmsrc_csaf
15.02.2562.020:Security Update:https://support.microsoft.com/help/5063224
https://support.microsoft.com/help/5063224

cvss

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

6.5

010

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

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16.5mediumAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:Csecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · secure@microsoft.com USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:Csecondary · NCSC-NL NL

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20USCWE-20USCWE-20US

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
Microsoft Microsoft Exchange Server 2016 Cumulative Update 2315.01.0.0 → 15.01.2507.058enisa_euvdEU
Microsoft Microsoft Exchange Server 2019 Cumulative Update 1415.02.0.0 → 15.02.1544.033enisa_euvdEU
Microsoft Microsoft Exchange Server 2019 Cumulative Update 1515.02.0.0 → 15.02.1748.036enisa_euvdEU
Microsoft Microsoft Exchange Server Subscription Edition RTM15.02.0.0 → 15.02.2562.020enisa_euvdEU
Microsoft Corp Microsoft Exchange Server≤ 2016 Cumulative Update 23fstec_bduRU
Microsoft Corp Microsoft Exchange Server≤ Subscription Edition RTMfstec_bduRU
Microsoft Corp Microsoft Exchange Server≤ 2019 Cumulative Update 15fstec_bduRU
Microsoft Corp Microsoft Exchange Server≤ 2019 Cumulative Update 14fstec_bduRU
Microsoft Exchange Server 2016 Cumulative Update 23all versionsfixedmsrc_csafUS
Microsoft Exchange Server 2016 Cumulative Update 23< 15.01.2507.058msrc_csafUS
Microsoft Exchange Server 2019 Cumulative Update 14all versionsfixedmsrc_csafUS
Microsoft Exchange Server 2019 Cumulative Update 14< 15.02.1544.033msrc_csafUS
Microsoft Exchange Server 2019 Cumulative Update 15all versionsfixedmsrc_csafUS
Microsoft Exchange Server 2019 Cumulative Update 15< 15.02.1748.036msrc_csafUS
Microsoft Exchange Server Subscription Edition RTMall versionsfixedmsrc_csafUS
Microsoft Exchange Server Subscription Edition RTM< 15.02.2562.020msrc_csafUS

showing 20 of 27

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2025-0252Kwetsbaarheden verholpen in Microsoft Exchange ServerNL2025-08-13csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in Microsoft Exchange Server.
WID-SEC-W-2025-1781Microsoft Exchange Server und Microsoft Exchange: Mehrere SchwachstellenDeutsch2025-08-12csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Exchange Server und Microsoft Exchange ausnutzen, um seine Privilegien zu erhöhen, um Daten zu Manipulieren, und um Informationen offenzulegen.
msrc_CVE-2025-25005Microsoft Exchange Server Tampering Vulnerability2025-08-12csaf · 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 2025-08-12modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

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