CVE-2025-49706

medium

Description

Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706

https://www.bleepingcomputer.com/news/security/ransomware-gangs-join-attacks-targeting-microsoft-sharepoint-servers/

https://thehackernews.com/2025/08/storm-2603-exploits-sharepoint-flaws-to.html

https://unit42.paloaltonetworks.com/microsoft-sharepoint-cve-2025-49704-cve-2025-49706-cve-2025-53770/

https://securelist.com/toolshell-explained/117045/

https://www.welivesecurity.com/en/eset-research/toolshell-an-all-you-can-eat-buffet-for-threat-actors/

https://www.theregister.com/2025/07/24/microsoft_sharepoint_ransomware/

https://www.securityweek.com/toolshell-attacks-hit-400-sharepoint-servers-us-government-victims-named/

https://www.helpnetsecurity.com/2025/07/24/storm-2603-spotted-deploying-ransomware-on-exploited-sharepoint-servers/

https://www.darkreading.com/endpoint-security/ransomware-actors-toolshell-sharepoint-bugs

https://www.bleepingcomputer.com/news/security/microsoft-sharepoint-servers-also-targeted-in-ransomware-attacks/

https://therecord.media/microsoft-says-warlock-ransomware-deployed-in-sharepoint-attacks

https://thehackernews.com/2025/07/storm-2603-exploits-sharepoint-flaws-to.html

https://cyberscoop.com/microsoft-sharepoint-attacks-400-victims-us-agencies/

https://arstechnica.com/security/2025/07/what-to-know-about-toolshell-the-sharepoint-threat-under-mass-exploitation/

https://www.securityweek.com/toolshell-zero-day-attacks-on-sharepoint-first-wave-linked-to-china-hit-high-value-targets/

https://www.securityweek.com/microsoft-says-chinese-apts-exploited-toolshell-zero-days-weeks-before-patch/

https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/

https://www.helpnetsecurity.com/2025/07/22/microsoft-pins-sharepoint-attacks-cve-2025-53770/

https://www.databreachtoday.com/microsoft-traces-on-premises-sharepoint-exploits-to-china-a-29029

https://www.darkreading.com/application-security/3-china-nation-state-actors-sharepoint-bugs

https://www.cisa.gov/news-events/alerts/2025/07/22/cisa-adds-two-known-exploited-vulnerabilities-catalog

https://www.bleepingcomputer.com/news/security/microsoft-sharepoint-toolshell-attacks-linked-to-chinese-hackers/

https://therecord.media/microsoft-sharepoint-vulnerabilities-china-groups-exploiting

https://thehackernews.com/2025/07/microsoft-links-ongoing-sharepoint.html

https://thehackernews.com/2025/07/hackers-exploit-sharepoint-zero-day.html

https://thehackernews.com/2025/07/cisa-orders-urgent-patching-after.html

https://hackread.com/microsoft-chinese-state-hackers-exploit-sharepoint-flaws/

https://blog.checkpoint.com/research/sharepoint-zero-day-cve-2025-53770-actively-exploited-what-security-teams-need-to-know/

https://securityaffairs.com/180252/hacking/sharepoint-under-fire-new-toolshell-attacks-target-enterprises.html

https://www.theregister.com/2025/07/21/massive_security_snafu_microsoft/

https://www.security.com/threat-intelligence/toolshell-zero-day-sharepoint-cve-2025-53770

https://www.hipaajournal.com/microsof-emergency-patches-sharepoint-server-vulnerabilities/

https://www.databreachtoday.com/attackers-exploit-zero-day-flaws-in-on-premises-sharepoint-a-29018

https://www.darkreading.com/remote-workforce/microsoft-rushes-emergency-fix-exploited-sharepoint-toolshell-flaw

https://securityaffairs.com/180211/hacking/u-s-cisa-urges-to-immediately-patch-microsoft-sharepoint-flaw-adding-it-to-its-known-exploited-vulnerabilities-catalog.html

https://krebsonsecurity.com/2025/07/microsoft-fix-targets-attacks-on-sharepoint-zero-day/

https://cyberscoop.com/microsoft-sharepoint-zero-day-attack-spree/

https://blog.talosintelligence.com/toolshell-affecting-sharepoint-servers/

https://arstechnica.com/security/2025/07/sharepoint-vulnerability-with-9-8-severity-rating-is-under-exploit-across-the-globe/

https://www.securityweek.com/sharepoint-under-attack-microsoft-warns-of-zero-day-exploited-in-the-wild-no-patch-available/

https://www.bleepingcomputer.com/news/microsoft/microsoft-sharepoint-zero-day-exploited-in-rce-attacks-no-patch-available/

https://thehackernews.com/2025/07/microsoft-releases-urgent-patch-for.html

https://thehackernews.com/2025/07/critical-microsoft-sharepoint-flaw.html

https://isc.sans.edu/diary/rss/32122

https://go.theregister.com/feed/www.theregister.com/2025/07/21/infosec_in_brief/

https://research.eye.security/sharepoint-under-siege/

https://www.tenable.com/blog/cve-2025-53770-frequently-asked-questions-about-zero-day-sharepoint-vulnerability-exploitation

https://www.tenable.com/blog/microsofts-july-2025-patch-tuesday-addresses-128-cves-cve-2025-49719

Details

Source: Mitre, NVD

Published: 2025-07-08

Updated: 2025-07-30

Named Vulnerability: ToolShellKnown Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00041

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability of Concern