Multiple integer overflows in the Microsoft (1) JScript 5.6 through 5.8 and (2) VBScript…
Priority MEDIUM 62CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.
Summary
Multiple integer overflows in the Microsoft (1) JScript 5.6 through 5.8 and (2) VBScript 5.6 through 5.8 scripting engines allow remote attackers to execute arbitrary code via a crafted web page, aka "Scripting Memory Reallocation Vulnerability."
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.26221 98th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 23
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:jscript:5.6:*:*:*:*:*:*:* | 5.6 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:vbscript:5.6:*:*:*:*:*:*:* | 5.6 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:jscript:5.7:*:*:*:*:*:*:* | 5.7 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:vbscript:5.7:*:*:*:*:*:*:* | 5.7 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:*:*:itanium:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:*:*:x32:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:*:*:x64:*:*:*:*:* | all versions | Running on | Microsoft |
- cpe:2.3:a:microsoft:jscript:5.6:*:*:*:*:*:*:* Versions 5.6 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:vbscript:5.6:*:*:*:*:*:*:* Versions 5.6 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:jscript:5.7:*:*:*:*:*:*:* Versions 5.7 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:vbscript:5.7:*:*:*:*:*:*:* Versions 5.7 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:*:*:itanium:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:*:*:x32:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:*:*:x64:*:*:*:*:* Versions all versions Running on ·Microsoft
Show 13 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_server_2008:*:sp2:x32:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:*:sp2:x64:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:-:sp2:itanium:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_vista:*:sp1:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_vista:*:sp2:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:a:microsoft:jscript:5.8:*:*:*:*:*:*:* | 5.8 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:vbscript:5.8:*:*:*:*:*:*:* | 5.8 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_7:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_7:-:sp1:x64:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_7:-:sp1:x86:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:r2:*:itanium:*:*:*:*:* | r2 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:r2:*:x64:*:*:*:*:* | r2 | Running on | Microsoft |
- cpe:2.3:o:microsoft:windows_server_2008:*:sp2:x32:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:*:sp2:x64:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:-:sp2:itanium:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_vista:*:sp1:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_vista:*:sp2:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:a:microsoft:jscript:5.8:*:*:*:*:*:*:* Versions 5.8 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:vbscript:5.8:*:*:*:*:*:*:* Versions 5.8 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_7:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_7:-:sp1:x64:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_7:-:sp1:x86:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:r2:*:itanium:*:*:*:*:* Versions r2 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:r2:*:x64:*:*:*:*:* Versions r2 Running on ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2011-0663
- 2026-10-03 Alias added: GHSA-c63x-h9v9-hmcr
References
More Microsoft Jscript vulnerabilities
- TI-2016-00162 The Microsoft (1) JScript 5.8 and (2) VBScript 5.7 and 5.8 engines, as used in Internet… KEVCVSS 3.1HIGH 7.5
- TI-2015-02183 The Microsoft (1) VBScript 5.7 and 5.8 and (2) JScript 5.7 and 5.8 engines, as used in… CVSS 2.0HIGH 9.3
- TI-2015-05190 The Microsoft (1) VBScript 5.7 and 5.8 and (2) JScript 5.7 and 5.8 engines, as used in… CVSS 2.0HIGH 9.3
- TI-2015-05121 The Microsoft (1) VBScript 5.7 and 5.8 and (2) JScript 5.7 and 5.8 engines, as used in… CVSS 2.0HIGH 9.3
- TI-2012-02197 Integer overflow in Microsoft Internet Explorer 8 and 9, JScript 5.8, and VBScript 5.8 on… CVSS 2.0HIGH 9.3
- TI-2015-05151 The Microsoft (1) VBScript and (2) JScript engines, as used in Internet Explorer 8… CVSS 2.0HIGH 9.3
Sources
- CVE-2011-0663 · CVE Program
- CVE-2011-0663 · NVD
- FIRST EPSS
- GHSA-c63x-h9v9-hmcr · GitHub Advisory Database · CC BY 4.0
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