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Fri, 23 Oct 2026 16:30:00 +0000
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ssvc
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Fri, 23 Oct 2026 12:00:00 +0000
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| Description | Snap7 through 1.4.3 contains an out-of-bounds write vulnerability in the passive partner that allows a malicious active partner to overflow application buffers by declaring an unvalidated BSend total length. Attackers connecting from the configured peer address can declare up to 65535 bytes and send a short fragment, causing BRecv to memcpy past the buffer and crash or corrupt SCADA, HMI or gateway processes. | |
| Title | Snap7 through 1.4.3 Out-of-Bounds Write via BRecv and CheckAsBRecvCompletion | |
| First Time appeared |
Snap7 Project
Snap7 Project snap7 |
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| Weaknesses | CWE-787 | |
| CPEs | cpe:2.3:a:snap7_project:snap7:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Snap7 Project
Snap7 Project snap7 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-23T14:59:52.690Z
Reserved: 2026-10-23T11:26:42.748Z
Link: CVE-2026-115723
Updated: 2026-10-23T14:48:44.118Z
Status : Deferred
Published: 2026-10-23T12:18:12.983
Modified: 2026-10-23T15:17:30.323
Link: CVE-2026-115723
No data.
OpenCVE Enrichment
Updated: 2026-10-23T16:15:17Z
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CWE-787
Out-of-bounds Write