CVE-2026-4769
Unauthenticated Access to Internal Diagnostic Interface
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 1.2.1.100, 1.2.7.100, 1.2.7.103, 1.2.1.102, 1.2.5.101
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: yes
- Technical impact: total
Summary
Certain devices in the WAGO System I/O Field series activate an internal diagnostic capability during the initial startup sequence. This functionality is not formally documented and becomes accessible without authentication for a brief period in the early boot phase. During this window, an unauthenticated remote attacker can gain access to the internal system processes, resulting in full system compromise.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: total
- Record last updated
Affected versions
- WAGO 0765-110x/0100-0000
From 1.0.0.0 · fixed in 1.2.1.100
- WAGO 0765-120x/0100-0000
From 1.0.0.0 · fixed in 1.2.7.100
- WAGO 0765-150x/0100-0000
From 1.0.0.0 · fixed in 1.2.7.103
- WAGO 0765-2101/0100-0000
From 1.0.0.0 · fixed in 1.2.1.102
- WAGO 0765-2102/0100-0000
From 1.0.0.0 · fixed in 1.2.5.101
- WAGO 0765-410x/0100-0000
From 1.0.0.0 · fixed in 1.2.1.100
- WAGO 0765-420x/0100-0000
From 1.0.0.0 · fixed in 1.2.7.100
- WAGO 0765-450x/0100-0000
From 1.0.0.0 · fixed in 1.2.7.103