Integer signedness error in the SQLConnectW function in an ODBC API (odbc32.dll) in Microsoft Data Access Components (MDAC) 2.8 SP1 and SP2, and Windows Data Access Components (WDAC) 6.0, allows remote attackers to execute arbitrary code via a long string in the Data Source Name (DSN) and a crafted szDSN argument, which bypasses a signed comparison and leads to a buffer overflow, aka "DSN Overflow Vulnerability."
Published Jan 12, 2011
9.3
HIGHCVSS 2.0
EPSS 34.40%
Description
Integer signedness error in the SQLConnectW function in an ODBC API (odbc32.dll) in Microsoft Data Access Components (MDAC) 2.8 SP1 and SP2, and Windows Data Access Components (WDAC) 6.0, allows remote attackers to execute arbitrary code via a long string in the Data Source Name (DSN) and a crafted szDSN argument, which bypasses a signed comparison and leads to a buffer overflow, aka "DSN Overflow Vulnerability."
Affected products
No data.
Configuration 1
- 2.8
Running on/with
- n/a
Configuration 2
- 2.8
Running on/with
- n/a
- n/a
- n/a
Configuration 3
- 6.0
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- r2
- r2
- 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:N/AC:M/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 1, 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 (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 34.40% (0.34399) | 98.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 34.40% (0.34399) | 98.20th | v5 (v2026.06.15) |
| Dec 28, 2025 | 64.30% (0.64297) | 98.37th | v4 (v2025.03.14) |
| Dec 27, 2025 | 60.97% (0.60973) | 98.23th | v4 (v2025.03.14) |
| Oct 28, 2025 | 64.30% (0.64297) | 98.34th | v4 (v2025.03.14) |
| Oct 27, 2025 | 60.97% (0.60973) | 98.21th | v4 (v2025.03.14) |
| Oct 1, 2025 | 64.30% (0.64297) | 98.39th | v4 (v2025.03.14) |
| Mar 19, 2025 | 60.97% (0.60973) | 98.09th | v4 (v2025.03.14) |
| Mar 17, 2025 | 64.60% (0.64601) | 98.30th | v4 (v2025.03.14) |
| Dec 17, 2024 | 80.05% (0.80048) | 98.54th | v3 (v2023.03.01) |
| Dec 12, 2024 | 89.25% (0.89247) | 98.87th | v3 (v2023.03.01) |
| Jul 12, 2023 | 90.19% (0.90192) | 98.34th | v3 (v2023.03.01) |
| May 20, 2023 | 88.18% (0.88183) | 98.14th | v3 (v2023.03.01) |
| Mar 26, 2023 | 68.94% (0.68940) | 97.41th | v3 (v2023.03.01) |
| Mar 7, 2023 | 62.43% (0.62426) | 97.20th | v3 (v2023.03.01) |
| Mar 6, 2023 | 67.16% (0.67160) | 99.09th | v2 (v2022.01.01) |
| Feb 4, 2022 | 67.16% (0.67160) | 98.89th | v2 (v2022.01.01) |
References (10)
- http://osvdb.org/70443 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/42804 third-party-advisoryx_refsource_SECUNIA
- http://support.avaya.com/css/P8/documents/100124846 x_refsource_CONFIRM
- http://www.securityfocus.com/bid/45695 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1024947 vdb-entryx_refsource_SECTRACK
- http://www.us-cert.gov/cas/techalerts/TA11-011A.html third-party-advisoryx_refsource_CERTUS Government Resource
- http://www.vupen.com/english/advisories/2011/0075 vdb-entryx_refsource_VUPEN
- http://www.zerodayinitiative.com/advisories/ZDI-11-001/ x_refsource_MISC
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-002 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12333 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://osvdb.org/70443 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/42804 | third-party-advisoryx_refsource_SECUNIA | |
| http://support.avaya.com/css/P8/documents/100124846 | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/45695 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1024947 | vdb-entryx_refsource_SECTRACK | |
| http://www.us-cert.gov/cas/techalerts/TA11-011A.html | third-party-advisoryx_refsource_CERTUS Government Resource | |
| http://www.vupen.com/english/advisories/2011/0075 | vdb-entryx_refsource_VUPEN | |
| http://www.zerodayinitiative.com/advisories/ZDI-11-001/ | x_refsource_MISC | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-002 | vendor-advisoryx_refsource_MS | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12333 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.