Improper Access Control vulnerability in AC4xxS devices
Priority LOW 39CWE-306Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
The endpoint hosts a script that allows an unauthorized remote attacker to put the system in a fail-safe state over the network due to missing authentication.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0048 41st percentileScored 2026-11-07
Fix Fixed ifm Smart PLC AC402s (ifm electronic GmbH): 4.3.17ifm Smart PLC AC422s (ifm electronic GmbH): 4.3.17+3 more products
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| ifm electronic GmbH | ifm Smart PLC AC402s | 4.04 to before 4.3.17; 6.1.8 | 4.3.17 | Patch available | CNA |
| ifm electronic GmbH | ifm Smart PLC AC422s | 4.04 to before 4.3.17; 6.1.8 | 4.3.17 | Patch available | CNA |
| ifm electronic GmbH | ifm Smart PLC AC424s | 4.04 to before 4.3.17; 6.1.8 | 4.3.17 | Patch available | CNA |
| ifm electronic GmbH | ifm Smart PLC AC432s | 4.04 to before 4.3.17; 6.1.8 | 4.3.17 | Patch available | CNA |
| ifm electronic GmbH | ifm Smart PLC AC434s | 4.04 to before 4.3.17; 6.1.8 | 4.3.17 | Patch available | CNA |
- ifm Smart PLC AC402s Vendorifm electronic GmbH Affected 4.04 to before 4.3.17; 6.1.8 Fixed in 4.3.17 Patch available CNA
- ifm Smart PLC AC422s Vendorifm electronic GmbH Affected 4.04 to before 4.3.17; 6.1.8 Fixed in 4.3.17 Patch available CNA
- ifm Smart PLC AC424s Vendorifm electronic GmbH Affected 4.04 to before 4.3.17; 6.1.8 Fixed in 4.3.17 Patch available CNA
- ifm Smart PLC AC432s Vendorifm electronic GmbH Affected 4.04 to before 4.3.17; 6.1.8 Fixed in 4.3.17 Patch available CNA
- ifm Smart PLC AC434s Vendorifm electronic GmbH Affected 4.04 to before 4.3.17; 6.1.8 Fixed in 4.3.17 Patch available CNA
Remediation
- Fix · CNA ifm Smart PLC AC402s (ifm electronic GmbH) Fixed in 4.3.17
- Fix · CNA ifm Smart PLC AC422s (ifm electronic GmbH) Fixed in 4.3.17
- Fix · CNA ifm Smart PLC AC424s (ifm electronic GmbH) Fixed in 4.3.17
- Fix · CNA ifm Smart PLC AC432s (ifm electronic GmbH) Fixed in 4.3.17
- Fix · CNA ifm Smart PLC AC434s (ifm electronic GmbH) Fixed in 4.3.17
Timeline
- 2026-10-02 Threatist record created from CVE-2024-8419
- 2026-10-03 Alias added: GHSA-24gf-3vg7-m9fh
References
Sources
- CVE-2024-8419 · CVE Program
- CVE-2024-8419 · NVD
- FIRST EPSS
- GHSA-24gf-3vg7-m9fh · 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