CVE-2021-30648
CRITICAL
9.8
CVSS Score
Published: June 30, 2021 at 10:40 AM UTC
Updated: June 17, 2026 at 03:50 AM UTC
17 products affected across 1 vendorSymantec ProxysgSymantec Advanced Secure Gateway 500-10 FirmwareSymantec Advanced Secure Gateway S400-20 Firmware
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Severity
CRITICAL9.8
Exploit prediction
EPSS 1%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
6.6 ≤ v < 6.7.4.176.7.5.0 ≤ v < 6.7.5.127.2 ≤ v < 7.2.7.27.3 ≤ v < 7.3.3.3
Affected range stops below 6.7.4.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.7.5.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.2.7.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.3.3.3, so it looks safe — our inference, not a vendor statement
broadcom-symantec-advanced-secure-gateway-500-10 (same device)
6.6 ≤ v < 6.7.4.176.7.5.0 ≤ v < 6.7.5.127.2 ≤ v < 7.2.7.27.3 ≤ v < 7.3.3.3
Affected range stops below 6.7.4.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.7.5.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.2.7.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.3.3.3, so it looks safe — our inference, not a vendor statement
broadcom-symantec-advanced-secure-gateway-s200-30 (same device)
6.6 ≤ v < 6.7.4.176.7.5.0 ≤ v < 6.7.5.127.2 ≤ v < 7.2.7.27.3 ≤ v < 7.3.3.3
Affected range stops below 6.7.4.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.7.5.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.2.7.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.3.3.3, so it looks safe — our inference, not a vendor statement
broadcom-symantec-advanced-secure-gateway-s200-40 (same device)
6.6 ≤ v < 6.7.4.176.7.5.0 ≤ v < 6.7.5.127.2 ≤ v < 7.2.7.27.3 ≤ v < 7.3.3.3
Affected range stops below 6.7.4.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.7.5.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.2.7.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.3.3.3, so it looks safe — our inference, not a vendor statement
broadcom-symantec-advanced-secure-gateway-s400-20 (same device)
6.6 ≤ v < 6.7.4.176.7.5.0 ≤ v < 6.7.5.127.2 ≤ v < 7.2.7.27.3 ≤ v < 7.3.3.3
Affected range stops below 6.7.4.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.7.5.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.2.7.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.3.3.3, so it looks safe — our inference, not a vendor statement
broadcom-symantec-advanced-secure-gateway-s400-30 (same device)
6.6 ≤ v < 6.7.4.176.7.5.0 ≤ v < 6.7.5.127.2 ≤ v < 7.2.7.27.3 ≤ v < 7.3.3.3
Affected range stops below 6.7.4.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.7.5.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.2.7.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.3.3.3, so it looks safe — our inference, not a vendor statement
broadcom-symantec-advanced-secure-gateway-s400-40 (same device)
6.6 ≤ v < 6.7.4.176.7.5.0 ≤ v < 6.7.5.127.2 ≤ v < 7.2.7.27.3 ≤ v < 7.3.3.3
Affected range stops below 6.7.4.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.7.5.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.2.7.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.3.3.3, so it looks safe — our inference, not a vendor statement
broadcom-symantec-advanced-secure-gateway-s500-20 (same device)
6.5 ≤ v < 6.5.10.166.6 ≤ v < 6.6.5.196.7 ≤ v < 6.7.5.127.2 ≤ v < 7.2.7.27.3 ≤ v < 7.3.3.3
Affected range stops below 6.5.10.16, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.6.5.19, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.7.5.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.2.7.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.3.3.3, so it looks safe — our inference, not a vendor statement
v < 6.7.4.17
Affected range stops below 6.7.4.17, so it looks safe — our inference, not a vendor statement
v < 6.7.4.17
Affected range stops below 6.7.4.17, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://support.broadcom.com/security-advisory/content/security-advisories/0/SYMSA18331CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-287
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