CVE-2025-68274
SIPGO is a library for writing SIP services in the GO language. Starting in version 0.3.0 and prior to version 1.0.0-alpha-1, a nil pointer dereference vulnerability is in the SIPGO library's `NewResponseFromRequest` function that affects all normal SIP operations. The vulnerability allows remote attackers to crash any SIP application by sending a single malformed SIP request without a To header. The vulnerability occurs when SIP message parsing succeeds for a request missing the To header, but the response creation code assumes the To header exists without proper nil checks. This affects routine operations like call setup, authentication, and message handling - not just error cases. This vulnerability affects all SIP applications using the sipgo library, not just specific configurations or edge cases, as long as they make use of the `NewResponseFromRequest` function. Version 1.0.0-alpha-1 contains a patch for the issue.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.7
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- EPSS probability
- 0.55%
- CWE
- CWE-476, CWE-755
- Published
- 2025-12-16
- Last modified
- 2026-03-13
Affected products
- emiago sipgo
Weakness type
Related vulnerabilities
- CVE-2026-45747 — Suricata lua/tls: null dereference in TlsGetCertInfo
- CVE-2026-86547 — mrubyc through 4.0.0 NULL Pointer Dereference via OP_ENTER
- CVE-2026-66303 — Skype for Business and Lync Denial of Service Vulnerability
- CVE-2026-77901 — Microsoft Office Word Remote Code Execution Vulnerability
- CVE-2026-70575 — Windows Schannel Denial of Service Vulnerability
- CVE-2026-69881 — Windows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability
- CVE-2026-69384 — Virtual Hard Disk (VHD) Miniport Driver Denial of Service Vulnerability
- CVE-2026-62762 — Windows Active Directory Domain Services Denial of Service Vulnerability