IM
IronMonkey Threat Research

CVE-2026-56758 MEDIUM

Published: 2026-07-30 | Last Modified: 2026-07-30 | Status: Received

Description

The ACSE layer contains a flaw in the processing of AARQ PDUs during MMS connection establishment. When parsing certain fields within the calling AP title, an attacker controlled length value of zero or one may cause the parser to read past the end of a heap buffer.

CVSS Metrics

Base Score: 6.5 (MEDIUM)

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

Attack VectorADJACENT_NETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Secondary

Exploitability Score: 2.8

Impact Score: 3.6

Base Score: 6.9 (MEDIUM)

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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

Attack VectorADJACENT
Attack ComplexityLOW
Attack RequirementsNONE
Privileges RequiredLOW
User InteractionNONE
Vulnerability ConfidentialityNONE
Vulnerability IntegrityNONE
Vulnerability AvailabilityHIGH
Subsequent ConfidentialityNONE
Subsequent IntegrityNONE
Subsequent AvailabilityNONE

Source: [email protected]

Type: Secondary

Weaknesses

Source Type Description
[email protected] Primary
en CWE-125
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