PT-2026-4886 · Zlib · Zlib

Titan Team · Published 2026-01-27 · Updated 2026-02-19 · CVE-2026-24811

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions root (affected versions not specified)

Description An issue exists within the root-project root, specifically in the builtins/zlib modules, related to program files inffast.C.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

RCE

Memory Corruption

Out of bounds Read

Weakness Enumeration

CWE-119

CWE-20

CWE-787

CWE-125

Related Identifiers

AZL-75354

AZL-75363

AZL-75384

CVE-2026-24811

Affected Products

Zlib

References · 10

• https://github.com/root-project/root/pull/18526 · Patch
• https://osv.dev/vulnerability/CVE-2026-24811 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-75384 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-75363 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-75354 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-24811 · Security Note
• https://t.me/cveNotify/152236 · Telegram Post
• https://twitter.com/CVEnew/status/2016081242198777865 · Twitter Post
• https://root.cern/blog/recent-common-vulnerabilities-when-does-ROOT-need-to-be-updated · Note
• https://t.me/cveNotify/152475 · Telegram Post