Intel Q35, GM45, PM45 Express, Q45, and Q43 Express chipsets in the SINIT Authenticated Code Module (ACM), which allows local users to bypass the Trusted Execution Technology protection mechanism and gain privileges by modifying the MCHBAR register to point to an attacker-controlled region, which prevents the SENTER instruction from properly applying VT-d protection while an MLE is being loaded
Published Dec 24, 2009
7.2
HIGHCVSS 2.0
EPSS 0.43%
Description
Intel Q35, GM45, PM45 Express, Q45, and Q43 Express chipsets in the SINIT Authenticated Code Module (ACM), which allows local users to bypass the Trusted Execution Technology protection mechanism and gain privileges by modifying the MCHBAR register to point to an attacker-controlled region, which prevents the SENTER instruction from properly applying VT-d protection while an MLE is being loaded.
Affected products
No data.
- n/a
- n/a
- n/a
- n/a
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2022-2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (8 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.43% (0.00427) | 34.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00427) | 33.89th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00055) | 14.36th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.27th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.34th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.15th | v2 (v2022.01.01) |
References (9)
- http://invisiblethingslab.com/resources/misc09/Another%20TXT%20Attack.pdf x_refsource_MISC
- http://osvdb.org/61248 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/37900 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00021&languageid=en-fr x_refsource_CONFIRMVendor Advisory
- http://theinvisiblethings.blogspot.com/2009/12/another-txt-attack.html x_refsource_MISC
- http://www.securityfocus.com/bid/37430 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1023382 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2009/3618 vdb-entryx_refsource_VUPENVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/54963 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://invisiblethingslab.com/resources/misc09/Another%20TXT%20Attack.pdf | x_refsource_MISC | |
| http://osvdb.org/61248 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/37900 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00021&languageid=en-fr | x_refsource_CONFIRMVendor Advisory | |
| http://theinvisiblethings.blogspot.com/2009/12/another-txt-attack.html | x_refsource_MISC | |
| http://www.securityfocus.com/bid/37430 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1023382 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2009/3618 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/54963 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.