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CVE-2021-30648The Symantec Advanced Secure Gateway (ASG) and ProxySG web management consoles are susceptible to an authentication bypass vulnerability.…
- 9.8CriticalCVSS base score
- 1.4%Exploitation in 30 daysEPSS · top 26% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By symantec
- 3 months later
· 3 months later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.4% · top 26% of all CVEs (13 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
Advanced Secure Gateway (ASG) and ProxySG
- affected ASG 6.6, ASG 6.7 prior to 6.7.4.17 or 6.7.5.12, ASG 7.2 prior to 7.2.7.2, ASG 7.3 prior to 7.3.3.3, ProxySG 6.5 prior to 6.5.10.16, ProxySG 6.6 prior to 6.6.5.19, ProxySG 6.7 prior to 6.7.3.15, 6.7.4.17, or 6.7.5.12, ProxySG 7.2 prior 7.2.7.2, ProxySG 7.3 prior to 7.3.3.3.
References
References1
- https://support.broadcom.com/security-advisory/content/security-advisories/0/SYMSA18331 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-17565 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-30648)Record last updated .