# Snap7 Project Snap7 vulnerabilities

Source: https://junglewise.ai/threats/technologies/snap7  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/snap7.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in Snap7 Project Snap7: 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-115723, was published on 23 October 2026. 1 vulnerability in the last four weeks, up from none in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 1
- Last 90 days: 2
- All time: 5 (0 critical, 0 exploited in the wild)

## About Snap7 Project Snap7

Snap7 is an open-source, multi-platform Ethernet communication library for interfacing with Siemens S7 PLCs.

## Latest Snap7 Project Snap7 vulnerabilities

- [CVE-2026-115723: Snap7 out-of-bounds write in passive partner](https://junglewise.ai/threats/cve-2026-115723-snap7-through-1-4-3-contains-an-out-of-bounds-write) (high, CVSS 7.4, published 23 Oct 2026)
- [CVE-2026-90572: davenardella snap7 memory corruption in opUpload](https://junglewise.ai/threats/cve-2026-90572-davenardella-snap7-memory-corruption-in-opupload) (medium, CVSS 4.7, published 13 Sep 2026)
- [CVE-2026-16225: davenardella snap7 out-of-bounds write in TSnap7Peer::NegotiatePDULength](https://junglewise.ai/threats/cve-2026-16225-davenardella-snap7-out-of-bounds-write-in-tsnap7peer) (medium, CVSS 6.3, published 19 Jul 2026)
- [CVE-2026-15105: davenardella snap7 stack buffer overflow in TS7Worker::PerformFunctionRead](https://junglewise.ai/threats/cve-2026-15105-davenardella-snap7-stack-buffer-overflow-in-ts7worker) (medium, CVSS 6.3, published 8 Jul 2026)
- [CVE-2026-51218: Snap7 heap buffer overflow in TS7Worker::PerformFunctionWrite](https://junglewise.ai/threats/cve-2026-51218-snap7-heap-buffer-overflow-in-ts7worker-performfunctionwrite) (info, CVSS 7.5, published 29 Jun 2026)

## Most severe Snap7 Project Snap7 vulnerabilities

- [CVE-2026-115723: Snap7 out-of-bounds write in passive partner](https://junglewise.ai/threats/cve-2026-115723-snap7-through-1-4-3-contains-an-out-of-bounds-write) (high, CVSS 7.4, published 23 Oct 2026)
- [CVE-2026-16225: davenardella snap7 out-of-bounds write in TSnap7Peer::NegotiatePDULength](https://junglewise.ai/threats/cve-2026-16225-davenardella-snap7-out-of-bounds-write-in-tsnap7peer) (medium, CVSS 6.3, published 19 Jul 2026)
- [CVE-2026-15105: davenardella snap7 stack buffer overflow in TS7Worker::PerformFunctionRead](https://junglewise.ai/threats/cve-2026-15105-davenardella-snap7-stack-buffer-overflow-in-ts7worker) (medium, CVSS 6.3, published 8 Jul 2026)
- [CVE-2026-90572: davenardella snap7 memory corruption in opUpload](https://junglewise.ai/threats/cve-2026-90572-davenardella-snap7-memory-corruption-in-opupload) (medium, CVSS 4.7, published 13 Sep 2026)
- [CVE-2026-51218: Snap7 heap buffer overflow in TS7Worker::PerformFunctionWrite](https://junglewise.ai/threats/cve-2026-51218-snap7-heap-buffer-overflow-in-ts7worker-performfunctionwrite) (info, CVSS 7.5, published 29 Jun 2026)

## Vulnerabilities per week

1 vulnerability in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 1 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 1 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Snap7 Project Snap7 vulnerabilities", https://junglewise.ai/threats/technologies/snap7, 9 November 2026.