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CVE-2026-90778

SIPp through 3.7.7 Buffer Overflow via SIP To Header Tag

Published: Sep 13, 2026Updated: Sep 14, 2026 Sources: CVE List NVDCWE-120
7.5HIGH
NVD MITRE
EPSS Score
0.6%
Top 51.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

SIPp through 3.7.7 contains a buffer overflow vulnerability in get_peer_tag() function when processing SIP To headers with tag parameters of 2049 bytes or more. Unauthenticated remote attackers can send crafted SIP messages with oversized tag parameters to overflow the static buffer and crash the process.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-120

Affected Products

SIPp
oss-project
sipp
DevTools & CI / build-test-tools

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/SIPp/sipp
github.com
https://github.com/SIPp/sipp/blob/v3.7.7/src/sip_parser.cpp#L76-L113
github.com
https://github.com/SIPp/sipp/commit/ddf22d1a54e0396b2e18ebaf4cf5a3fa860e5da4
github.com
and 2 more references View all →

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