CVE-2022-23462: IOWOW is a C utility library and persistent key/value storage engine

Q: How do I fix CVE-2022-23462?

iowow: upgrade to newer than 1.4.15. Exact commands for each OS are on this page.

Q: Is CVE-2022-23462 being exploited?

CVE-2022-23462 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-23462 affect?

CVE-2022-23462 affects iowow. Severity is medium (CVSS 6.2). IOWOW is a C utility library and persistent key/value storage engine. Versions 1.4.15 and prior contain a stack buffer overflow vulnerability that allows for Denial of Service (DOS) when it parses scientific notation numbers present in JSON

Q: How urgent is CVE-2022-23462?

Priority 40/100. Public exploit reference

This month

MEDIUM 6.2UPGRADE

CVE-2022-23462 is a medium-severity flaw (CVSS 6.2) affecting iowow. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IOWOW is a C utility library and persistent key/value storage engine. Versions 1.4.15 and prior contain a stack buffer overflow vulnerability that allows for Denial of Service (DOS) when it parses scientific notation numbers present in JSON. A patch for this issue is available at commit a79d31e4cff1d5a08f665574b29fd885897a28fd in the `master` branch of the repository. There are no workarounds other than applying the patch.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.2 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 45%)
CISA exploited list	No
Weakness	CWE-120, CWE-121, CWE-787
Published	2022-10-21
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: softmotions

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

Am I affected?

Timeline

2022-10-21 22:15 UTCPublished CVE record published
2026-06-17 04:30 UTCUpdated Record last modified

softmotions iowow UPGRADE

Affected: <= 1.4.15

Fixed in: newer than 1.4.15

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.4.15 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade iowow

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade iowow

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2022-23462?

iowow: upgrade to newer than 1.4.15. Exact commands for each OS are on this page.

Is CVE-2022-23462 being exploited?

CVE-2022-23462 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-2022-23462 affect?

CVE-2022-23462 affects iowow. Severity is medium (CVSS 6.2). IOWOW is a C utility library and persistent key/value storage engine. Versions 1.4.15 and prior contain a stack buffer overflow vulnerability that allows for Denial of Service (DOS) when it parses scientific notation numbers present in JSON

How urgent is CVE-2022-23462?

Priority 40/100. Public exploit reference

References

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