Unrestricted file upload in Symantec Advanced Secure Gateway
Priority LOW 38CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-434.
Summary
Unrestricted file upload vulnerability in the Symantec Advanced Secure Gateway (ASG) and ProxySG management consoles. A malicious appliance administrator can upload arbitrary malicious files to the management console and trick another administrator user into downloading and executing malicious code.
Why it matters now
EPSS 0.04844 92nd percentileScored 2026-11-07
Fix Fixed Advanced Secure Gateway (ASG) (Symantec Corporation): 6.6.5.14, 6.7.3.1ProxySG (Symantec Corporation): 6.5.10.8, 6.6.5.14, 6.7.3.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Symantec | Advanced Secure Gateway (ASG) | 6.6 to before 6.6.5.14; 6.7 to before 6.7.3.1 | 6.6.5.14, 6.7.3.1 | Patch available | CNA |
| Symantec | ProxySG | 6.5 to before 6.5.10.8; 6.6 to before 6.6.5.14; 6.7 to before 6.7.3.1 | 6.5.10.8, 6.6.5.14, 6.7.3.1 | Patch available | CNA |
- Advanced Secure Gateway (ASG) VendorSymantec Affected 6.6 to before 6.6.5.14; 6.7 to before 6.7.3.1 Fixed in 6.6.5.14, 6.7.3.1 Patch available CNA
- ProxySG VendorSymantec Affected 6.5 to before 6.5.10.8; 6.6 to before 6.6.5.14; 6.7 to before 6.7.3.1 Fixed in 6.5.10.8, 6.6.5.14, 6.7.3.1 Patch available CNA
CPE configurations NVD · 2
Remediation
- Fix · CNA Advanced Secure Gateway (ASG) (Symantec Corporation) Fixed in 6.6.5.14, 6.7.3.1
- Fix · CNA ProxySG (Symantec Corporation) Fixed in 6.5.10.8, 6.6.5.14, 6.7.3.1
Timeline
- 2026-10-02 Threatist record created from CVE-2016-10258
- 2026-10-03 Alias added: GHSA-8586-qhh3-x99v
References
More Symantec vulnerabilities
- TI-2017-04157 Command injection in Symantec Messaging Gateway KEVCVSS 3.1HIGH 8.8
- TI-2009-01353 The Intel LANDesk Common Base Agent (CBA) in Symantec Alert Management System 2 (AMS2)… CVSS 2.0HIGH 10.0
- TI-2017-04156 The Symantec Messaging Gateway can encounter an issue of remote code execution, which… CVSS 3.0CRITICAL 10.0
- TI-2012-00284 The management GUI in Symantec Web Gateway 5.0.x before 5.0.3 does not properly restrict… CVSS 2.0HIGH 10.0
- TI-2006-02539 Stack-based buffer overflow in Symantec Antivirus 10.1 and Client Security 3.1 allows… CVSS 2.0HIGH 10.0
- TI-2012-02563 The management console in Symantec Web Gateway 5.0.x before 5.0.3.18 allows remote… CVSS 2.0HIGH 10.0
Sources
- CVE-2016-10258 · CVE Program
- CVE-2016-10258 · NVD
- FIRST EPSS
- GHSA-8586-qhh3-x99v · GitHub Advisory Database · CC BY 4.0
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