HIGHCVSS v3.1 7.4Vulnerability
CVE-2026-115723
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.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-10-23T14:24:59.572098+00:00
- Cvss severity
- HIGH
- Cvss score
- 7.4
- Retrieved at
- 2026-10-23T14:28:01+00:00
- Score
- 7.4
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-115723
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
- First seen by Signal
- 2026-10-23T14:28:01+00:00
- Name
- CVE-2026-115723
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
- Published at
- 2026-10-23T12:18:12.983
- Last modified
- 2026-10-23T13:19:13.150
Related Entities (1)
HAS_WEAKNESS (1)
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