CVE-2021-30648
The Symantec Advanced Secure Gateway (ASG) and ProxySG web management consoles are susceptible to...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-30648- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:N/C:P/I:P/A:C - Weakness
- CWE-287
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-30648- Updated
- 2026-11-02
EUVDEUVD-2021-17565 No score
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.
- Record
EUVD-2021-17565- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-23p9-49c6-fm5w No score
The Symantec Advanced Secure Gateway (ASG) and ProxySG web management consoles are susceptible to...
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.
- Record
GHSA-23p9-49c6-fm5w- Weakness
- CWE-287
- Updated
- 2026-11-02
Affected products
- broadcom symantec advanced secure gateway 500-10 firmware
- broadcom symantec advanced secure gateway s200-30 firmware
- broadcom symantec advanced secure gateway s200-40 firmware
- broadcom symantec advanced secure gateway s400-20 firmware
- broadcom symantec advanced secure gateway s400-30 firmware
- broadcom symantec advanced secure gateway s400-40 firmware
- broadcom symantec advanced secure gateway s500-20 firmware
- broadcom symantec proxysg
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-30648 is a critical vulnerability (CVSS 9.8) in Broadcom Symantec Advanced Secure Gateway 500-10 Firmware, published June 30, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.45%, the 73rd percentile. No source names a fixed version.