CVE-2022-34992: Luadec v0.9.9 was discovered to contain a heap-buffer overflow via the function UnsetPending.

Routine

HIGH 7.8DOWNGRADE

CVE-2022-34992 is a high-severity flaw (CVSS 7.8) affecting luadec. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Luadec v0.9.9 was discovered to contain a heap-buffer overflow via the function UnsetPending.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-787
Published	2022-08-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: luadec project

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

Am I affected?

Timeline

2022-08-03 18:15 UTCPublished CVE record published
2026-06-17 04:51 UTCUpdated Record last modified

luadec project luadec DOWNGRADE

Affected: 0.9.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.9.9 (Debian / Ubuntu)

apt-cache madison luadec sudo apt install luadec=<VERSION_BEFORE_0.9.9> sudo apt-mark hold luadec

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

dnf --showduplicates list luadec sudo dnf downgrade luadec-<VERSION_BEFORE_0.9.9> sudo dnf versionlock add luadec

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-2022-34992?

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

Is CVE-2022-34992 being exploited?

CVE-2022-34992 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-2022-34992 affect?

CVE-2022-34992 affects luadec. Severity is high (CVSS 7.8). Luadec v0.9.9 was discovered to contain a heap-buffer overflow via the function UnsetPending.

How urgent is CVE-2022-34992?

Priority 39/100. High severity; Public exploit reference

References

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