Improper authorization in Dell Avamar
Priority LOW 37CWE-285Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-285.
Summary
Dell EMC Avamar Server, versions 19.3 and 19.4 contain an Improper Authorization vulnerability in the web UI. A remote low privileged attacker could potentially exploit this vulnerability, to gain unauthorized read or modification access to other users' backup data.
Why it matters now
EPSS 0.01043 64th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| Dell | Avamar | 19.3, 19.4 | — | No fix listed | CNA |
- Avamar VendorDell Affected 19.3, 19.4 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-21511
- 2026-10-03 Alias added: GHSA-2gr2-xjj5-q4ff
References
More Dell Emc Avamar Server vulnerabilities
- TI-2020-17716 Path traversal in Dell Avamar CVSS 3.1CRITICAL 10.0
- TI-2020-04393 Deserialization of untrusted data in Dell Avamar Virtual Edition CVSS 3.1CRITICAL 9.8
- TI-2020-17714 SQL injection in Dell Avamar CVSS 3.1CRITICAL 10.0
- TI-2020-17715 Path traversal in Dell Avamar CVSS 3.1HIGH 8.7
- TI-2019-02780 Incorrect permission assignment in Dell Avamar CVSS 3.1HIGH 8.1
- TI-2019-02769 XML external entity injection in Dell Avamar CVSS 3.1HIGH 8.2
Sources
- CVE-2021-21511 · CVE Program
- CVE-2021-21511 · NVD
- FIRST EPSS
- GHSA-2gr2-xjj5-q4ff · GitHub Advisory Database · CC BY 4.0
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