Out-of-bounds read in Sofia-SIP MIME parser allows remote crashes
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Sofia-SIP through 1.13.18 contains an out-of-bounds read in msg_multipart_parse() (CWE-125). A multipart MIME boundary longer than the message body makes the parser read past a heap buffer. An unauthenticated remote attacker can crash the process by sending a crafted SIP message. A public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| freeswitch | sofia-sip | up to 1.13.18 | — | No fix listed | CNA |
- sofia-sip Vendorfreeswitch Affected up to 1.13.18 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Sofia-SIP.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Vendor assessments
Timeline
- 2026-10-14 Threatist record created from CVE-2026-110658
- 2026-10-15 Alias added: GHSA-9vj3-xq9j-5vq6
- 2026-10-15 CISA SSVC decision points changed
- 2026-10-15 Priority changed: MEDIUM → HIGH
- 2026-10-18 Affected versions changed · Red Hat
- 2026-10-18 CVSS score added · Red Hat
References
More freeswitch vulnerabilities
- TI-2023-08915 heap-over-flow in stun_parse_attribute in sofia-sip CVSS 3.1CRITICAL 9.8
- TI-2022-13049 Heap-based Buffer Overflow and Out-of-bounds Write in Sofia-SIP CVSS 3.1CRITICAL 9.8
- TI-2023-28097 FreeSWITCH susceptible to Denial of Service via DTLS Hello packets during call initiation CVSS 3.1HIGH 7.5
- TI-2023-20909 Resource allocation without limits in signalwire freeswitch CVSS 3.1HIGH 7.5
- TI-2023-20908 FreeSWITCH allows remote users to trigger out of bounds write by offering an ICE candidate with unknown component ID CVSS 3.1HIGH 7.5
- TI-2023-15601 heap-over-flow and integer-overflow in sofia-sip CVSS 3.1HIGH 7.5
Sources
- CVE-2026-110658 · CVE Program
- CVE-2026-110658 · NVD
- FIRST EPSS
- GHSA-9vj3-xq9j-5vq6 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-110658 · Red Hat security data · CC BY 4.0
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