CVE-2026-90780 PUBLISHED

SIPp through 3.7.7 Buffer Overflow via Oversized SIP Header Content

Assigner: VulnCheck
Reserved: 13.09.2026 Published: 13.09.2026 Updated: 13.09.2026

SIPp through 3.7.7 contains a buffer overflow vulnerability in the get_header() function in src/sip_parser.cpp when processing SIP messages with header content exceeding 20,490 bytes. Unauthenticated remote attackers can send crafted SIP messages with oversized headers to overflow the static buffer and crash the process.

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
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 7.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	SIPp
Product	sipp
Versions	Default: unaffected affected from 0 to 3.7.7 (incl.)

CVE-2026-90780 PUBLISHED

SIPp through 3.7.7 Buffer Overflow via Oversized SIP Header Content

Metrics

Product Status

Credits

References

Problem Types