CVE-2020-37140: Everest, later referred to as AIDA64, 5.50.2100 contains a denial of service vulnerability that allows local a

Routine

MEDIUM 5.5DOWNGRADE

CVE-2020-37140 is a medium-severity flaw (CVSS 5.5) affecting aida64. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Everest, later referred to as AIDA64, 5.50.2100 contains a denial of service vulnerability that allows local attackers to crash the application by manipulating file open functionality. Attackers can generate a 450-byte buffer of repeated characters and paste it into the file open dialog to trigger an application crash.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-787
Published	2026-02-05
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: aida64

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-05 17:16 UTCPublished CVE record published
2026-06-17 03:17 UTCUpdated Record last modified

aida64 aida64 DOWNGRADE

Affected: 5.50.2100

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.50.2100

1. Check installed version

apt-cache policy aida64 || rpm -q aida64 || aida64 --version

2. No fixed release: DOWNGRADE to a release before 5.50.2100 (Debian / Ubuntu)

apt-cache madison aida64 sudo apt install aida64=<VERSION_BEFORE_5.50.2100> sudo apt-mark hold aida64

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list aida64 sudo dnf downgrade aida64-<VERSION_BEFORE_5.50.2100> sudo dnf versionlock add aida64

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2020-37140?

aida64: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-37140 being exploited?

CVE-2020-37140 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-2020-37140 affect?

CVE-2020-37140 affects aida64. Severity is medium (CVSS 5.5). Everest, later referred to as AIDA64, 5.50.2100 contains a denial of service vulnerability that allows local attackers to crash the application by manipulating file open functionality. Attackers can generate a 450-byte buffer of repeated ch

How urgent is CVE-2020-37140?

Priority 28/100. Public exploit reference

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References

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