CVE-2021-30648
CRITICALCVSS 9.8/10EPSS 1.45%
Last modified
CVE-2021-30648 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The Symantec Advanced Secure Gateway (ASG) and ProxySG web management consoles are susceptible to an authentication bypass vulnerability. An unauthenticated attacker can execute arbitrary CLI commands, view/modify the appliance configuration and policy, and shutdown/restart the appliance.. EPSS estimates a 1.45% chance of exploitation in the next 30 days.
Description
The Symantec Advanced Secure Gateway (ASG) and ProxySG web management consoles are susceptible to an authentication bypass vulnerability. An unauthenticated attacker can execute arbitrary CLI commands, view/modify the appliance configuration and policy, and shutdown/restart the appliance.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Broadcom | Symantec Proxysg | >= 6.5, < 6.5.10.16 |
| Broadcom | Symantec Proxysg | >= 6.6, < 6.6.5.19 |
| Broadcom | Symantec Proxysg | >= 6.7, < 6.7.5.12 |
| Broadcom | Symantec Proxysg | >= 7.2, < 7.2.7.2 |
| Broadcom | Symantec Proxysg | >= 7.3, < 7.3.3.3 |
| Broadcom | Symantec Advanced Secure Gateway S200-30 Firmware | >= 6.6, < 6.7.4.17 |
| Broadcom | Symantec Advanced Secure Gateway S200-30 Firmware | >= 6.7.5.0, < 6.7.5.12 |
| Broadcom | Symantec Advanced Secure Gateway S200-30 Firmware | >= 7.2, < 7.2.7.2 |
| Broadcom | Symantec Advanced Secure Gateway S200-30 Firmware | >= 7.3, < 7.3.3.3 |
| Broadcom | Symantec Advanced Secure Gateway S200-40 Firmware | >= 6.6, < 6.7.4.17 |
| Broadcom | Symantec Advanced Secure Gateway S200-40 Firmware | >= 6.7.5.0, < 6.7.5.12 |
| Broadcom | Symantec Advanced Secure Gateway S200-40 Firmware | >= 7.2, < 7.2.7.2 |
| Broadcom | Symantec Advanced Secure Gateway S200-40 Firmware | >= 7.3, < 7.3.3.3 |
| Broadcom | Symantec Advanced Secure Gateway S400-20 Firmware | >= 6.6, < 6.7.4.17 |
| Broadcom | Symantec Advanced Secure Gateway S400-20 Firmware | >= 6.7.5.0, < 6.7.5.12 |
| Broadcom | Symantec Advanced Secure Gateway S400-20 Firmware | >= 7.2, < 7.2.7.2 |
| Broadcom | Symantec Advanced Secure Gateway S400-20 Firmware | >= 7.3, < 7.3.3.3 |
| Broadcom | Symantec Advanced Secure Gateway S400-30 Firmware | >= 6.6, < 6.7.4.17 |
| Broadcom | Symantec Advanced Secure Gateway S400-30 Firmware | >= 6.7.5.0, < 6.7.5.12 |
| Broadcom | Symantec Advanced Secure Gateway S400-30 Firmware | >= 7.2, < 7.2.7.2 |
| Broadcom | Symantec Advanced Secure Gateway S400-30 Firmware | >= 7.3, < 7.3.3.3 |
| Broadcom | Symantec Advanced Secure Gateway S400-40 Firmware | >= 6.6, < 6.7.4.17 |
| Broadcom | Symantec Advanced Secure Gateway S400-40 Firmware | >= 6.7.5.0, < 6.7.5.12 |
| Broadcom | Symantec Advanced Secure Gateway S400-40 Firmware | >= 7.2, < 7.2.7.2 |
| Broadcom | Symantec Advanced Secure Gateway S400-40 Firmware | >= 7.3, < 7.3.3.3 |
| Broadcom | Symantec Advanced Secure Gateway 500-10 Firmware | >= 6.6, < 6.7.4.17 |
| Broadcom | Symantec Advanced Secure Gateway 500-10 Firmware | >= 6.7.5.0, < 6.7.5.12 |
| Broadcom | Symantec Advanced Secure Gateway 500-10 Firmware | >= 7.2, < 7.2.7.2 |
| Broadcom | Symantec Advanced Secure Gateway 500-10 Firmware | >= 7.3, < 7.3.3.3 |
| Broadcom | Symantec Advanced Secure Gateway S500-20 Firmware | >= 6.6, < 6.7.4.17 |
| Broadcom | Symantec Advanced Secure Gateway S500-20 Firmware | >= 6.7.5.0, < 6.7.5.12 |
| Broadcom | Symantec Advanced Secure Gateway S500-20 Firmware | >= 7.2, < 7.2.7.2 |
| Broadcom | Symantec Advanced Secure Gateway S500-20 Firmware | >= 7.3, < 7.3.3.3 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-30648?
The Symantec Advanced Secure Gateway (ASG) and ProxySG web management consoles are susceptible to an authentication bypass vulnerability. An unauthenticated attacker can execute arbitrary CLI commands, view/modify the appliance configuration and policy, and shutdown/restart the appliance.
How severe is CVE-2021-30648?
CVE-2021-30648 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.45% probability of exploitation in the next 30 days.
How do I fix CVE-2021-30648?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-30648?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST