Critical 9.8Published Jan 27, 2026

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

Updated under an hour ago (2026-10-19 09:10 UTC)

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It affects root. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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

CVSS: 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-20, CWE-119, CWE-125, CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

root root root:root	through 6.34.08	NVD

References

https://github.com/root-project/root/pull/18526issue-tracking, patch
https://root.cern/blog/recent-common-vulnerabilities-when-does-ROOT-need-to-be-updated/

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.