Security readout for executives and security teams
Plain-English summary
Dell Avamar Server and Avamar Virtual Edition before 19.10 SP1 with CHF338912 have a path traversal flaw. A remote attacker must already have high privileges, but successful abuse could delete arbitrary files, potentially disrupting backup operations or damaging system integrity.
Executive priority
Treat as a near-term backup-platform maintenance item, not an internet-wide emergency. Prioritize environments where Avamar administration is broadly reachable, shared admin accounts exist, or backup availability is business-critical.
Technical view
CVE-2026-22762 is CWE-22 in Dell Avamar Security. CVSS 3.1 is 6.5: network reachable, low complexity, high privileges required, no user interaction, with high integrity and availability impact. Dell describes the outcome as arbitrary file delete.
Likely exposure
Organizations running Dell Avamar Server or Avamar Virtual Edition versions prior to 19.10 SP1 with CHF338912 are the primary concern. The bundle also references PowerProtect DP Series Appliance, but provides no affected version range for it.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. Exploitation requires remote access and high privileges, reducing likelihood but increasing concern for compromised administrators or overly broad privileged access.
Researcher notes
Evidence is limited to CVE and Dell advisory metadata in the bundle. No exploit details, proof-of-concept, or active exploitation evidence is provided. The key research focus is validating version exposure and whether privileged access paths are tightly controlled.
Mitigation direction
- Upgrade affected Avamar deployments to Dell’s fixed level: 19.10 SP1 with CHF338912.
- Review Dell advisory DSA-2026-053 for product-specific update instructions.
- Restrict privileged Avamar administrative access to trusted networks and named administrators.
- For PowerProtect DP Series Appliance, verify Dell guidance for embedded Avamar exposure.
Validation and detection
- Inventory all Avamar Server and Avamar Virtual Edition instances.
- Confirm installed version and hotfix level against Dell DSA-2026-053.
- Check whether privileged Avamar interfaces are reachable from untrusted networks.
- Review administrative activity and file deletion events for anomalies.
- Confirm backup operations remain healthy after applying the Dell update.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-22762 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H1.25.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.