Is CVE-2023-21057 actively exploited?

No active exploitation of CVE-2023-21057 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-21057 be exploited remotely?

Yes. CVE-2023-21057 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-21057?

CVE-2023-21057 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2023-21057

CRITICAL

CVE-2023-21057

CWE-787Published: March 24, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

In ProfSixDecomTcpSACKoption of RohcPacketCommon, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-244450646References: N/A

NVD Source

Risk Analysis

A missing bounds check in the Android kernel's ROHC packet handling creates an out-of-bounds write vulnerability. This critical flaw enables remote code execution without requiring user interaction or elevated privileges.

No public exploit is known, and the vulnerability is not in the CISA KEV. It is considered remotely exploitable given the network vector and low attack complexity.

Recommended Action

Update the Android kernel to the latest version provided by the manufacturer to include the necessary bounds checking.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-21057 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.