CVE-2020-13556
9.8
CRITICAL · CVSS 3.1 · EPSS 4.7% (pctl 92)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
An out-of-bounds write vulnerability exists in the Ethernet/IP server functionality of EIP Stack Group OpENer 2.3 and development commit 8c73bf3. A specially crafted series of network requests can lead to remote code execution. An attacker can send a sequence of requests to trigger this vulnerability.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 4.71% — more likely to be exploited than 92% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-12-11 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| opener project | opener |
References
→ the Explorer · watch your stack · NVD