CVE-2023-50570: An issue in the component IPAddressBitsDivision of IPAddress v5.1.0 leads to an infinite loop

Routine

MEDIUM 5.5DOWNGRADE

CVE-2023-50570 is a medium-severity flaw (CVSS 5.5) affecting ipaddress. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue in the component IPAddressBitsDivision of IPAddress v5.1.0 leads to an infinite loop. This is disputed because an infinite loop occurs only for cases in which the developer supplies invalid arguments. The product is not intended to always halt for contrived inputs.

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	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-835
Published	2023-12-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: seancfoley

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

Am I affected?

Timeline

2023-12-29 15:15 UTCPublished CVE record published
2026-06-17 06:39 UTCUpdated Record last modified

seancfoley ipaddress DOWNGRADE

Affected: 5.1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 5.1.0 (Debian / Ubuntu)

apt-cache madison ipaddress sudo apt install ipaddress=<VERSION_BEFORE_5.1.0> sudo apt-mark hold ipaddress

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

dnf --showduplicates list ipaddress sudo dnf downgrade ipaddress-<VERSION_BEFORE_5.1.0> sudo dnf versionlock add ipaddress

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-2023-50570?

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

Is CVE-2023-50570 being exploited?

CVE-2023-50570 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-2023-50570 affect?

CVE-2023-50570 affects ipaddress. Severity is medium (CVSS 5.5). An issue in the component IPAddressBitsDivision of IPAddress v5.1.0 leads to an infinite loop. This is disputed because an infinite loop occurs only for cases in which the developer supplies invalid arguments. The product is not intended to

How urgent is CVE-2023-50570?

Priority 29/100. Public exploit reference

References

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