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Attackers Exploit AhsayCBS Flaws to Deploy XMRig Miners Disguised as Microsoft Edge

The Hacker News
Actively Exploited
CVEMicrosoftExploitVulnerability

Overview

Attackers are exploiting two recently disclosed vulnerabilities in the AhsayCBS backup utility, which is used for data backup and recovery. These flaws allow the attackers to take control of affected devices and deploy malicious software, including web shells and XMRig cryptocurrency miners disguised as Microsoft Edge. The specific vulnerability, identified as CVE-2026-105133, has a CVSS v4 score of 5.5, indicating a moderate level of risk. This situation primarily affects users of the AhsayCBS backup software, which could lead to unauthorized access and potential financial losses due to the mining activities. Companies using this utility should be vigilant and assess their systems for these vulnerabilities to prevent exploitation.

Key Takeaways

  • Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
  • Affected Systems: AhsayCBS backup utility, specifically the component related to the checkSysPwd() function in com/ahsay/obs/api/ApiStructsAction.java.
  • Action Required: Users should apply any available patches from Ahsay for the AhsayCBS backup utility, monitor their systems for unauthorized software, and consider implementing stricter authentication measures to mitigate the risk of exploitation.
  • Timeline: Newly disclosed

Original Article Summary

Threat actors have been observed exploiting two recently disclosed flaws in the AhsayCBS backup utility to seize control of affected devices and deploy web shells and XMRig cryptocurrency miners. Details of the flaws are below - CVE-2026-105133 (CVSS v4 score: 5.5) - An improper authentication vulnerability in the checkSysPwd() function in the "com/ahsay/obs/api/ApiStructsAction.java"

Impact

AhsayCBS backup utility, specifically the component related to the checkSysPwd() function in com/ahsay/obs/api/ApiStructsAction.java.

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Users should apply any available patches from Ahsay for the AhsayCBS backup utility, monitor their systems for unauthorized software, and consider implementing stricter authentication measures to mitigate the risk of exploitation.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Microsoft, Exploit, and 1 more.

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