When an authenticated password change request takes place, this vulnerability could allow…
Priority LOW 38CWE-300Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
When an authenticated password change request takes place, this vulnerability could allow the attacker to intercept the message that includes the legitimate, new password hash and replace it with an illegitimate hash. The user would no longer be able to authenticate to the controller (Micro800: All versions, MicroLogix 1400: Version 21 and later) causing a denial-of-service condition
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02958 87th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Micro800, MicroLogix 1400 | Micro800: All versions, MicroLogix 1400: Version 21 and later when Enhanced Password Security enabled. | — | No fix listed | CNA |
- Micro800, MicroLogix 1400 Vendor— Affected Micro800: All versions, MicroLogix 1400: Version 21 and later when Enhanced Password Security enabled. Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:rockwellautomation:micro800_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:micro800:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:micrologix_1400_firmware:*:*:*:*:*:*:*:* | 21.0 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:micrologix_1400:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
- cpe:2.3:o:rockwellautomation:micro800_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:micro800:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:micrologix_1400_firmware:*:*:*:*:*:*:*:* Versions 21.0 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:micrologix_1400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-32926
- 2026-10-03 Alias added: GHSA-h2f7-g9rh-rr7g
References
Sources
- CVE-2021-32926 · CVE Program
- CVE-2021-32926 · NVD
- FIRST EPSS
- GHSA-h2f7-g9rh-rr7g · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences