Vulnerability · Published Nov 9, 2022 · Assigned by CERTVDE
CVE-2021-34567WAGO I/O-Check Service prone to Out-of-bounds Read
High 8.2
In plain English
A high-severity out-of-bounds read in 750-81xx/xxx-xxxFW from WAGO. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities).
Severity (CVSS 3.1)8.2High
Exploit odds (30 days)1.0%top 36.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to provoke a denial of service and an limited out-of-bounds read.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WAGO | 750-81xx/xxx-xxxFW | FW1 – through FW18 Patch 2 |
| WAGO | 750-82xx/xxx-xxx | FW1 – through FW18 Patch 2 |
| WAGO | 752-8303/8000-0002 | FW1 – through FW18 Patch 2 |
| WAGO | 762-4xxx | FW1 – through FW18 Patch 2 |
| WAGO | 762-5xxx | FW1 – through FW18 Patch 2 |
| WAGO | 762-6xxx | FW1 – through FW18 Patch 2 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H