CVE-2026-24811: Vulnerability in root-project root (builtins/zlib modules)

Q: How do I fix CVE-2026-24811?

root: upgrade to newer than 6.34.08. Exact commands for each OS are on this page.

Q: Is CVE-2026-24811 being exploited?

CVE-2026-24811 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-2026-24811 affect?

CVE-2026-24811 affects root. Severity is critical (CVSS 9.8). Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C. This issue affects root.

Q: How urgent is CVE-2026-24811?

Priority 46/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-24811 is a critical-severity flaw (CVSS 9.8) affecting root. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C. This issue affects root.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 72%)
CISA exploited list	No
Weakness	CWE-20, CWE-119, CWE-125, CWE-787
Published	2026-01-27
Last modified	2026-06-17

Publisher (CNA): Government Technology Agency of Singapore Cyber Security Group (GovTech CSG) · Vendor: root

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

Am I affected?

Timeline

2026-01-27 09:15 UTCPublished CVE record published
2026-06-17 10:23 UTCUpdated Record last modified

root root UPGRADE

Affected: <= 6.34.08

Fixed in: newer than 6.34.08

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 6.34.08 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade root

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-2026-24811?

root: upgrade to newer than 6.34.08. Exact commands for each OS are on this page.

Is CVE-2026-24811 being exploited?

CVE-2026-24811 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-2026-24811 affect?

CVE-2026-24811 affects root. Severity is critical (CVSS 9.8). Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C. This issue affects root.

How urgent is CVE-2026-24811?

Priority 46/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

zlib vulnerabilities

References

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