CVE-2009-4419Intel Q35, GM45, PM45 Express, Q45, and Q43 Express chipsets in the SINIT Authenticated Code Module (ACM), which allows local users to…
- 7.2HighCVSS base score
- 0.43%Exploitation in 30 daysEPSS · top 63% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By mitre
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 0.43% · top 63% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Affected products
n/a
- affected n/a
References
References9
- http://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00021&languageid=en-fr (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1023382 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 37430 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 61248 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- http://invisiblethingslab.com/resources/misc09/Another%20TXT%20Attack.pdf (opens in a new tab)x_refsource_MISCx_transferred
- ADV-2009-3618 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 37900 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- intel-chipset-sinit-priv-escalation(54963) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://theinvisiblethings.blogspot.com/2009/12/another-txt-attack.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-4386 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-4419)Record last updated .