PatchTheCVECVE-2020-3681: Authenticated and encrypted payload MMEs can be forged and remotely sent to any HPAV2 system using a jailbreak
CVE-2020-3681 is a critical-severity flaw (CVSS 9.8) affecting -. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Authenticated and encrypted payload MMEs can be forged and remotely sent to any HPAV2 system using a jailbreak key recoverable from code.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.7% (top 45%) |
| CISA exploited list | No |
| Weakness | CWE-327 |
| Published | 2020-07-31 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2020-3681?
-: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2020-3681 being exploited?
CVE-2020-3681 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2020-3681 affect?
CVE-2020-3681 affects -. Severity is critical (CVSS 9.8). Authenticated and encrypted payload MMEs can be forged and remotely sent to any HPAV2 system using a jailbreak key recoverable from code.
How urgent is CVE-2020-3681?
Priority 53/100. Critical severity; Remotely exploitable, no login, no user action
Software pages
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