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CVE-2026-2967
DEB
Low

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/net_builtin.c…

CVSS
2.9
Low
EPSS
0.00
p46
Published
2026-01-01
Updated
2026-01-01
Description

A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/net_builtin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is reported as difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Tags · CWE
Pre-auth
CWE-940
CAPEC-500
CAPEC-594
CAPEC-595
CAPEC-596
Affected products
Mongoose ≤ 7.20
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Timeline
2026-01-01
Published
2026-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: H
High (H)
Attack Requirements
AT: N
None
Privileges Required
PR: N
None (N)
User Interaction
UI: N
None (N)
Vulnerable System Confidentiality
VC: N
None (N)
Vulnerable System Integrity
VI: N
None (N)
Vulnerable System Availability
VA: L
Low (L)
Subsequent System Confidentiality
SC: N
None (N)
Subsequent System Integrity
SI: N
None (N)
Subsequent System Availability
SA: N
None (N)
Exploit Code Maturity
E: P
Proof-of-Concept
Confidentiality Requirement
CR: X
Not Defined
Integrity Requirement
IR: X
Not Defined
Availability Requirement
AR: X
Not Defined
Modified Attack Vector
MAV: X
Not Defined
Modified Attack Complexity
MAC: X
Not Defined
Modified Attack Requirements
MAT: X
Not Defined
Modified Privileges Required
MPR: X
Not Defined
Modified User Interaction
MUI: X
Not Defined
Modified Vulnerable System Confidentiality
MVC: X
Not Defined
Modified Vulnerable System Integrity
MVI: X
Not Defined
Modified Vulnerable System Availability
MVA: X
Not Defined
Modified Subsequent System Confidentiality
MSC: X
Not Defined
Modified Subsequent System Integrity
MSI: X
Not Defined
Modified Subsequent System Availability
MSA: X
Not Defined
s
S: X
X
au
AU: X
X
r
R: X
X
v
V: X
X
re
RE: X
X
u
U: X
X
Exploit indicators
EPSS
0.002 · p46
Known exploited (KEV)
No
Known exploits — Сканер-ВС
No Сканер-ВС checks registered for this vulnerability yet.
Affected software
ProductVendorStatus
mongooseTracked
swupdateTracked
swupdateTracked
swupdateTracked
swupdateTracked
mongoose*Tracked