Security readout for executives and security teams
Plain-English summary
CVE-2021-26909 affects Automox Agent before version 31. A weakly protected, guessable S3 bucket endpoint could expose sensitive files. The business risk is limited but relevant because Automox supports endpoint security operations, so exposed information could help undermine defensive programs.
Executive priority
Treat this as a hygiene and exposure-reduction item, not an emergency. Prioritize confirming Automox Agent version 31 or later across the fleet, especially where Automox supports security operations or sensitive endpoint data handling.
Technical view
Automox Agent version 30, and versions prior to 31 per the description, used insufficient access protection around an S3 bucket endpoint. The CVSS 3.1 score is 3.7 with network access, high attack complexity, no privileges, no user interaction, and low confidentiality impact only.
Likely exposure
Exposure is most likely in organizations that deployed Automox Agent version 30 or any pre-31 agent and had sensitive files stored through the affected endpoint. The source bundle provides no CPEs or broader product list.
Exploitation context
The bundle does not show CISA KEV listing or cited evidence of active exploitation. The described attack depends on brute-forcing a guessable endpoint, reflected by high attack complexity and low confidentiality impact.
Researcher notes
Evidence is limited to the CVE record, Automox confirmation, and Rapid7 analysis links in the bundle. Do not infer affected platforms, exploit availability, exposed file types, or alternate fixes beyond the stated version 31 remediation.
Mitigation direction
- Upgrade Automox Agent to version 31 or later.
- Confirm all managed endpoints completed the agent update.
- Review Automox advisory guidance for any supported follow-up actions.
- If upgrades are blocked, contact Automox for vendor-supported compensating controls.
Validation and detection
- Inventory Automox Agent versions across managed endpoints.
- Flag any Automox Agent version 30 or pre-31 installation.
- Verify vulnerability scanners map findings to CVE-2021-26909 accurately.
- Document remediation evidence showing updated agent versions.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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 lookupCVE-2021-26909 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
- Low
- CVSS
- 3.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
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:L/I:N/A:N2.21.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.7LowVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://community.automox.com/t/cve-2021-26908-and-cve-201-26909-automox-agent-information-disclosure-vulnerabilities-fixed/1955CVE reference · x_refsource_CONFIRM
- https://www.rapid7.com/blog/post/2021/04/13/cve-2021-26908-and-cve-2021-26909-automox-agent-information-disclosure-fixed/CVE 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.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.