CVE-2026-16225
5.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Summary
A security flaw has been discovered in davenardella snap7 up to 1.4.3. The impacted element is the function TSnap7Peer::NegotiatePDULength of the file src/core/s7_peer.cpp. The manipulation of the argument PDULength results in out-of-bounds write. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| davenardella | snap7 | 1.4.0 | affected |
| davenardella | snap7 | 1.4.1 | affected |
| davenardella | snap7 | 1.4.2 | affected |
| davenardella | snap7 | 1.4.3 | affected |
Weaknesses
- CWE-787: Out-of-bounds Write
- CWE-119: Memory Corruption
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
References
- https://vuldb.com/vuln/380047
- https://vuldb.com/vuln/380047/cti
- https://vuldb.com/cve/CVE-2026-16225
- https://vuldb.com/submit/858228
- https://github.com/davenardella/snap7/issues/17
- https://github.com/davenardella/snap7/
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