Is CVE-2021-35261 actively exploited?

No active exploitation of CVE-2021-35261 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-35261 be exploited remotely?

Yes. CVE-2021-35261 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-35261?

CVE-2021-35261 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-35261

CWE-434Published: February 17, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

File Upload Vulnerability in Yupoxion BearAdmin before commit 10176153528b0a914eb4d726e200fd506b73b075 allows attacker to execute arbitrary remote code via the Upfile function of the extend/tools/Ueditor endpoint.

NVD Source

Risk Analysis

This vulnerability in Yupoxion BearAdmin allows an attacker to upload arbitrary files, leading to remote code execution. Given the critical CVSS score of 9.8, this flaw poses a severe risk to system integrity and availability.

No public exploit is currently known, and it is not in CISA's KEV catalog. The vulnerability is remotely exploitable with low attack complexity.

Recommended Action

Users should update to a version beyond commit 10176153528b0a914eb4d726e200fd506b73b075 to resolve the issue.

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-2021-35261 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.