How severe is CVE-2007-0856?

CVE-2007-0856 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2007-0856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-0856?

CVE-2007-0856 primarily affects Trend Micro Client-server-messaging Security. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-0856?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2007-0856 published?

CVE-2007-0856 was published on 2007-02-08 and last updated on 2026-06-16.

CVE-2007-0856

CVE-2007-0856 is a high-severity vulnerability in Trend Micro Client-server-messaging Security with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Trend Micro Client-server-messaging Security
Published: 2007-02-08
Last modified: 2026-06-16

Description

TmComm.sys 1.5.0.1052 in the Trend Micro Anti-Rootkit Common Module (RCM), with the VsapiNI.sys 3.320.0.1003 scan engine, as used in Trend Micro PC-cillin Internet Security 2007, Antivirus 2007, Anti-Spyware for SMB 3.2 SP1, Anti-Spyware for Consumer 3.5, Anti-Spyware for Enterprise 3.0 SP2, Client / Server / Messaging Security for SMB 3.5, Damage Cleanup Services 3.2, and possibly other products, assigns Everyone write permission for the \\.\TmComm DOS device interface, which allows local users to access privileged IOCTLs and execute arbitrary code or overwrite arbitrary memory in the kernel context.

Frequently asked questions

What is CVE-2007-0856?: TmComm.sys 1.5.0.1052 in the Trend Micro Anti-Rootkit Common Module (RCM), with the VsapiNI.sys 3.320.0.1003 scan engine, as used in Trend Micro PC-cillin Internet Security 2007, Antivirus 2007, Anti-Spyware for SMB 3.2 SP1, Anti-Spyware for Consumer 3.5, Anti-Spyware for Enterprise 3.0 SP2, Client / Server / Messaging Security for SMB 3.5, Damage Cleanup Services 3.2, and possibly other products, assigns Everyone write permission for the \\.\TmComm DOS device interface, which allows local users to access privileged IOCTLs and execute arbitrary code or overwrite arbitrary memory in the kernel context.
How severe is CVE-2007-0856?: CVE-2007-0856 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2007-0856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-0856?: CVE-2007-0856 primarily affects Trend Micro Client-server-messaging Security. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-0856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2007-0856 published?: CVE-2007-0856 was published on 2007-02-08 and last updated on 2026-06-16.

References

Affected products (10)

cpe:2.3:a:trend_micro:client-server-messaging_security:3.5:*:smb:*:*:*:*:*
cpe:2.3:a:trend_micro:damage_cleanup_services:3.2:*:*:*:*:*:*:*
cpe:2.3:a:trend_micro:pc-cillin_internet_security:2007:*:*:*:*:*:*:*
cpe:2.3:a:trend_micro:tmcomm.sys:1.5.1052:*:*:*:*:*:*:*
cpe:2.3:a:trend_micro:trend_micro_antirootkit_common_module:*:*:*:*:*:*:*:*
cpe:2.3:a:trend_micro:trend_micro_antispyware:3.0_sp2:*:enterprise:*:*:*:*:*
cpe:2.3:a:trend_micro:trend_micro_antispyware:3.2_sp1:*:smb:*:*:*:*:*
cpe:2.3:a:trend_micro:trend_micro_antispyware:3.5:*:consumer:*:*:*:*:*
cpe:2.3:a:trend_micro:trend_micro_antivirus:2007:*:*:*:*:*:*:*
cpe:2.3:a:trend_micro:vsapini.sys:3.320.1003:*:*:*:*:*:*:*

More vulnerabilities in Trend Micro Client-server-messaging Security

CVE-2008-2437 — Critical (CVSS 10.0): Stack-based buffer overflow in cgiRecvFile.exe in Trend Micro OfficeScan 7.3 patch 4 build 1362 and other builds,…
CVE-2007-0325 — Critical (CVSS 9.3): Multiple buffer overflows in the Trend Micro OfficeScan Web-Deployment SetupINICtrl ActiveX control in…

All CVEs affecting Trend Micro Client-server-messaging Security →