PatchTheCVECVE-2016-8364: An issue was discovered in IBHsoftec S7-SoftPLC prior to 4.12b
CVE-2016-8364 is a critical-severity flaw (CVSS 9.8) affecting s7-softplc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An issue was discovered in IBHsoftec S7-SoftPLC prior to 4.12b. Object memory can read a network packet that is larger than the space that is available, a Heap-based Buffer Overflow.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.4% (top 16%) |
| CISA exploited list | No |
| Weakness | CWE-119 |
| Published | 2017-02-13 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2016-8364?
s7-softplc: upgrade to newer than 4.12. Exact commands for each OS are on this page.
Is CVE-2016-8364 being exploited?
CVE-2016-8364 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2016-8364 affect?
CVE-2016-8364 affects s7-softplc. Severity is critical (CVSS 9.8). An issue was discovered in IBHsoftec S7-SoftPLC prior to 4.12b. Object memory can read a network packet that is larger than the space that is available, a Heap-based Buffer Overflow.
How urgent is CVE-2016-8364?
Priority 60/100. Critical severity; Remotely exploitable, no login, no user action