CVE-2019-25631: AIDA64 Business 5.99.4900 contains a structured exception handling buffer overflow vulnerability that allows l

Routine

HIGH 8.4DOWNGRADE

CVE-2019-25631 is a high-severity flaw (CVSS 8.4) affecting aida64. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

AIDA64 Business 5.99.4900 contains a structured exception handling buffer overflow vulnerability that allows local attackers to execute arbitrary code by overwriting SEH pointers with malicious shellcode. Attackers can inject egg hunter shellcode through the SMTP display name field in preferences or report wizard functionality to trigger the overflow and execute code with application privileges.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.4 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-787
Published	2026-03-24
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

2026-03-24 12:16 UTCPublished CVE record published
2026-06-17 02:32 UTCUpdated Record last modified

aida64 aida64 DOWNGRADE

Affected: 5.99.4900

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.99.4900

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.99.4900 (Debian / Ubuntu)

apt-cache madison aida64 sudo apt install aida64=<VERSION_BEFORE_5.99.4900> sudo apt-mark hold aida64

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

dnf --showduplicates list aida64 sudo dnf downgrade aida64-<VERSION_BEFORE_5.99.4900> 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-2019-25631?

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

Is CVE-2019-25631 being exploited?

CVE-2019-25631 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-2019-25631 affect?

CVE-2019-25631 affects aida64. Severity is high (CVSS 8.4). AIDA64 Business 5.99.4900 contains a structured exception handling buffer overflow vulnerability that allows local attackers to execute arbitrary code by overwriting SEH pointers with malicious shellcode. Attackers can inject egg hunter she

How urgent is CVE-2019-25631?

Priority 39/100. High severity; Public exploit reference

Related CVEs

CVE-2019-25633 HIGH 8.4 DOWNGRADE AIDA64 Extreme 5.99.4900 contains a structured exception handling buffer overflow vulnerability that allows lo
CVE-2019-25629 HIGH 8.4 DOWNGRADE AIDA64 Extreme 5.99.4900 contains a structured exception handler buffer overflow vulnerability in the logging
CVE-2019-25360 CRITICAL 9.8 DOWNGRADE Aida64 Engineer 6.10.5200 contains a buffer overflow vulnerability in the CSV logging configuration that allow

References

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