Security readout for executives and security teams
Plain-English summary
This flaw could let an unauthenticated remote attacker run commands as root on a host running the Juniper AppFormix Agent, but the published CVSS vector marks attack complexity as high and notes unspecified attacker preconditions. Successful exploitation would mean full host compromise.
Executive priority
Treat as a high-priority infrastructure management exposure. Patch affected AppFormix Agent hosts promptly, especially if the REST API is network-reachable beyond tightly controlled management segments.
Technical view
CVE-2021-0265 is an unvalidated REST API issue in Juniper Networks AppFormix Agent. A remote unauthenticated attacker may execute commands as root on the agent host after meeting certain preconditions. Affected versions are AppFormix 3 before 3.1.22, 3.2.14, and 3.3.0.
Likely exposure
Exposure is likely limited to environments running Juniper Contrail Insights/AppFormix Agent version 3 in the affected release ranges, especially where the agent REST API is reachable from untrusted networks.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. The CVSS score is 8.1 with network attack vector, no privileges, no user interaction, high impact, and high attack complexity.
Researcher notes
The public bundle names root command execution through an unvalidated REST API but does not define the attacker preconditions. Avoid assuming exploitability without confirming version, API exposure, and Juniper advisory details.
Mitigation direction
- Upgrade affected AppFormix 3 deployments to Juniper’s fixed versions: 3.1.22, 3.2.14, 3.3.0, or later.
- Review Juniper JSA11156 for supported upgrade paths and any vendor-approved mitigations.
- Restrict AppFormix Agent REST API reachability to trusted management networks where operationally feasible.
- Prioritize hosts where AppFormix Agent runs with broad infrastructure visibility or privileged operational access.
Validation and detection
- Inventory all Contrail Insights/AppFormix Agent deployments and record exact version numbers.
- Confirm no AppFormix 3 installation is below 3.1.22, 3.2.14, or 3.3.0.
- Identify which networks can reach the AppFormix Agent REST API.
- Review host and application logs for suspicious unauthenticated API activity, without assuming compromise.
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.
CVE-2021-0265 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
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/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:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.juniper.net/JSA11156CVE reference · x_refsource_MISC
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.