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CVE-2021-26890 high CVSS 7.8

Code Injection in Application Virtualization (CVE-2021-26890)

Summary

Code injection in Application Virtualization (CVE-2021-26890). Successful exploitation can lead to full system takeover.

Original description

The description as published by the source.

Application Virtualization Remote Code Execution Vulnerability

Source: NIST National Vulnerability Database NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A weakness called CVE-2021-26890 was discovered in Application Virtualization.
In plain terms, it is a flaw where attacker-supplied code gets executed by the program.
Severity is High (CVSS 7.8/10). If exploited, attackers can leak data or disrupt key functionality.
What you should do: update the affected software to the latest version. If unsure, ask your IT team or search the vendor's site for "Application Virtualization CVE-2021-26890".

CVE-2021-26890 (Application Virtualization). Severity: High / CVSSv3 7.8. Category: CWE-94.
Response plan:

  1. Check the vendor advisory for affected versions and the patched release.
  2. If a vulnerable version is running in production, schedule maintenance (urgency from KEV/CVSS).
  3. If no patch yet, mitigate via WAF rule, disabling the affected feature, etc.
  4. Monitor logs / SIEM for known IOC and PoC signatures of this CVE.
    PoCs and fix commits: see the 'References' section, MITRE, and NVD.
❓ What is the problem

A weakness (CVE-2021-26890) in Application Virtualization. In plain words, it is a flaw where attacker-supplied code gets executed by the program.

📍 Affected scope

Target versions of Application Virtualization (see vendor advisory). If running in production, identify exposure immediately.

🔥 Severity

Severity: High (CVSS 7.8/10). If exploited, attackers can leak data or disrupt key functionality.

🔧 How to fix

Update to the patched release as listed in the vendor advisory. (Typical mitigation pattern for CWE-94)

🛡️ Workaround

If a patch is not yet available, consider disabling the affected feature, applying WAF rules, blocking via network ACLs, or isolating the vulnerable version.

🔍 Detection

Check version information, scan dependencies via SBOM, and monitor SIEM for IOC and PoC signatures related to this CVE.

References

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