CVE-2024-37826: A NULL pointer dereference in vercot Serva v4.6.0 allows attackers to cause a Denial of Service (DoS) via a cr

This month

HIGH 7.5REMOTEDOWNGRADE

CVE-2024-37826 is a high-severity flaw (CVSS 7.5) affecting serva. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A NULL pointer dereference in vercot Serva v4.6.0 allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

Why this priority

High severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-476
Published	2024-08-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: vercot

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

Am I affected?

Timeline

2024-08-12 13:38 UTCPublished CVE record published
2026-06-17 07:38 UTCUpdated Record last modified

vercot serva DOWNGRADE

Affected: 4.6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.6.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.6.0 (Debian / Ubuntu)

apt-cache madison serva sudo apt install serva=<VERSION_BEFORE_4.6.0> sudo apt-mark hold serva

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

dnf --showduplicates list serva sudo dnf downgrade serva-<VERSION_BEFORE_4.6.0> sudo dnf versionlock add serva

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-2024-37826?

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

Is CVE-2024-37826 being exploited?

CVE-2024-37826 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-2024-37826 affect?

CVE-2024-37826 affects serva. Severity is high (CVSS 7.5). A NULL pointer dereference in vercot Serva v4.6.0 allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

How urgent is CVE-2024-37826?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

References

← Back to latest CVEs