CVE-2021-33485
critical
CVSS v3
9.8
CVSS v4 NEW
—
VIR risk
9.8
Description
CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow.
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| codesys | control | {"endExcluding":"4.2.0.0"} | 4.2.0.0 |
| codesys | control | {"endIncluding":"4.2.0.0"} | |
| codesys | control_rte | {"endExcluding":"3.5.17.10"} | 3.5.17.10 |
| codesys | control_runtime_system_toolkit | {"endExcluding":"3.5.17.10"} | 3.5.17.10 |
| codesys | control_win_sl | {"endExcluding":"3.5.17.10"} | 3.5.17.10 |
| codesys | embedded_target_visu_toolkit | {"endExcluding":"3.5.17.10"} | 3.5.17.10 |
| codesys | hmi | {"endExcluding":"3.5.17.10"} | 3.5.17.10 |
| codesys | remote_target_visu_toolkit | {"endExcluding":"3.5.17.10"} | 3.5.17.10 |
References
CWEs
CWE-787 CWE-122
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.