CISA Warns of Android Framework Integer Overflow Vulnerability Exploited in Attacks

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a newly identified Android Framework vulnerability, tracked as CVE-2025-48595, to its Known Exploited Vulnerabilities (KEV) catalog, warning that the flaw is actively exploited in the wild.

The vulnerability affects the Android Framework component and is classified as an integer overflow issue under CWE-190.

Security researchers note that improper handling of integer values within the framework can lead to memory corruption, ultimately allowing attackers to execute arbitrary code on affected devices.

Successful exploitation could enable local privilege escalation, granting attackers elevated access to sensitive system resources.

Android Integer Overflow Vulnerability Exploited

According to CISA, the flaw is particularly dangerous because it resides within core Android functionality, increasing the potential impact across a wide range of devices and Android versions.

While the agency has not confirmed whether the vulnerability is being used in ransomware campaigns, its inclusion in the KEV catalog confirms active exploitation in real-world attacks.

Integer overflow vulnerabilities occur when arithmetic operations exceed the maximum size that a variable can store. In this case, the overflow can lead to unexpected behavior in memory allocation or bounds checking.

An attacker who can trigger this condition may be able to manipulate memory structures, bypass security controls, and execute malicious payloads with elevated privileges.

Threat actors often leverage such vulnerabilities in chained exploits, combining them with other weaknesses to achieve full device compromise.

In Android environments, local privilege escalation flaws are particularly valuable, as they allow attackers to move from a limited application sandbox to system-level access.

CISA has directed federal agencies to remediate the vulnerability by June 5, 2026, under Binding Operational Directive (BOD) 22-01. The agency urges organizations and individual users to apply vendor-provided patches or mitigations immediately.

If patches are not available, CISA recommends discontinuing use of affected systems until remediation can be completed. Although technical details of in-the-wild exploitation remain limited, the rapid addition of CVE-2025-48595 to the KEV catalog highlights the urgency of patching Android devices.

Organizations managing enterprise mobility environments should prioritize updates, enforce device compliance policies, and monitor for suspicious activity that may indicate exploitation attempts.

Security teams are also encouraged to review Android security bulletins, validate patch levels across managed devices, and implement mobile threat defense solutions where possible.

As Android continues to be a primary target for attackers, vulnerabilities in its core framework components remain a critical risk vector that requires immediate attention.

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