{"id":"CVE-2025-49179","title":"A flaw was found in the X Record extension","summary":"A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks.","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H","cwe":["CWE-190"],"published":"2025-06-17","updated":"2026-06-25","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-49179","references":[{"url":"https://access.redhat.com/errata/RHSA-2025:10258","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10342","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10343","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10344","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10346","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10347","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10348","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10349","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10350","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10351","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10352","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10355","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10356","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10360","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10370","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10374","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10375","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10376","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10377","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10378","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10381","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:10410","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:9303","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:9304","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:9305","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:9306","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:9392","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:9964","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2025-49179","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2369978","label":"secalert@redhat.com"},{"url":"https://gitlab.freedesktop.org/xorg/xserver/-/commit/2bde9ca49a8fd9a1e6697d5e7ef837870d66f5d4","label":"secalert@redhat.com"},{"url":"https://www.x.org/wiki/Development/Security/","label":"secalert@redhat.com"},{"url":"https://lists.debian.org/debian-lts-announce/2025/06/msg00028.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00332,"epssPercentile":0.23703,"ingestedAt":"2026-06-29T13:24:34.378Z","slug":"CVE-2025-49179","body":"## Overview\n\nA flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}