Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-10532

Severity CVSS v4.0:
LOW
Type:
CWE-502 Deserialization of Untrusted Dat
Publication date:
01/06/2026
Last modified:
01/06/2026

Description

Deserialization of untrusted data vulnerability in QOS.CH Sarl logback logback-core (HardenedObjectInputStream (logback-core) modules) allows Object Injection, albeit heavily restricted.<br /> <br /> More precisely, an attacker able to influence serialized data sent to <br /> SimpleSocketServer or SimpleSSLSocketServer can instantiate Proxy objects.<br /> <br /> <br /> Although deserialization is heavily restricted by HardenedObjectInputStream and no <br /> practical way to achieve remote code execution or significant privilege <br /> escalation has been identified, this issue constitutes a bypass of the <br /> intended security restrictions.<br /> <br /> <br /> <br /> This issue affects logback: through 1.5.33 inclusive.

Impact

Vector 4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:P/RE:M/U:Green CVSS v4.0 Severity and Metrics:

Base Score: 2.90 LOW
Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:P/RE:M/U:Green

Attack Vector (AV): Network
Attack Complexity (AC): High
Attack Requirements (AT): Present
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): Low
Integrity (VI): Low
Availability (VA): None
Confidentiality (SC): Low
Integrity (SI): Low
Availability (SA): None
Vulnerability Response Effort (RE): Moderate
Provider Urgency (U): Green
Exploit Maturity (E): POC

Base Score 4.0
2.90
Severity 4.0
LOW

References to Advisories, Solutions, and Tools