medium 4.7

CVE-2025-31257 json

This issue was addressed with improved memory handling.

published 2025-05-12 17 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-14397

cvss: 4.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits: 0; none known

This issue was addressed with improved memory handling. This issue is fixed in Safari 18.5, iOS 18.5 and iPadOS 18.5, macOS Sequoia 15.5, tvOS 18.5, visionOS 2.5, watchOS 11.5. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Patch / fix

fixed in 7 distros 7

Apple Safari 18.5
Apple iOS and iPadOS 18.5
Apple macOS 15.5
Apple tvOS 18.5
Apple visionOS 2.5
Apple watchOS 11.5
Siemens SIMATIC CN 4100 V5.0

debian ubuntu red hat suse almalinux rocky linux arch linux

wpewebkit Debian 14, Debian 13 2.48.2-1
webkit2gtk Debian 12 2.48.3-1~deb12u1
webkit2gtk Debian 14, Debian 13 2.48.2-1

debian advisories DEBIAN-CVE-2025-31257

webkit2gtk Ubuntu 22.04 LTS 2.48.3-0ubuntu0.22.04.1
webkit2gtk Ubuntu 24.04 LTS 2.48.3-0ubuntu0.24.04.1

ubuntu advisories UBUNTU-CVE-2025-31257

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

webkit2gtk3 RHEL 8 2.48.2-1.el8_10
webkit2gtk3-jsc RHEL 8 2.48.2-1.el8_10
webkit2gtk3 RHEL 9 2.48.2-1.el9_6
webkit2gtk3-jsc RHEL 9 2.48.2-1.el9_6
webkitgtk4 RHEL 7 ELS 2.48.3-2.el7_9
webkitgtk4-jsc RHEL 7 ELS 2.48.3-2.el7_9
webkit2gtk3 RHEL 9.2 E4S 2.48.2-1.el9_2
webkit2gtk3-jsc RHEL 9.2 E4S 2.48.2-1.el9_2

red hat advisories RHSA-2025:10364 RHSA-2025:8600 RHSA-2025:8541 RHSA-2025:8534 RHSA-2025:8532 RHSA-2025:8533

webkit2gtk3 SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS +1 more 2.48.2-150200.147.1
webkit2gtk3 SLE Module for Desktop Applications 15 SP7, SLE Module for Desktop Applications 15 SP6, openSUSE Leap 15.6 2.48.2-150600.12.40.2
webkit2gtk4 SLE Module for Development Tools 15 SP7, SLE Module for Development Tools 15 SP6, SLE Module for Basesystem 15 SP7 +2 more 2.48.2-150600.12.40.2
webkit2gtk3-soup2 SLE Module for Basesystem 15 SP7, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.48.2-150600.12.40.2
webkit2gtk3 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.48.2-150400.4.119.1
webkit2gtk4 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 2.48.2-150400.4.119.1
webkit2gtk3-soup2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +7 more 2.48.2-150400.4.119.1
webkit2gtk3 SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 2.48.2-4.38.1

suse advisories SUSE-SU-2025:02033-1 SUSE-SU-2025:01746-1 SUSE-SU-2025:01724-1 SUSE-SU-2025:01720-1

webkit2gtk3 AlmaLinux 8 2.48.2-1.el8_10
webkit2gtk3-jsc AlmaLinux 8 2.48.2-1.el8_10
webkit2gtk3 AlmaLinux 9 2.48.2-1.el9_6
webkit2gtk3-jsc AlmaLinux 9 2.48.2-1.el9_6

almalinux advisories ALSA-2025:8046 ALSA-2025:7995

webkit2gtk3 Rocky Linux 9 2.48.2-1.el9_6
webkit2gtk3 Rocky Linux 8 2.48.2-1.el8_10

rocky linux advisories RLSA-2025:7995 RLSA-2025:8046

wpewebkit Arch Linux 2.49.1-1
webkit2gtk-4.1 Arch Linux 2.49.1-1
webkitgtk-6.0 Arch Linux 2.49.1-1

arch linux advisories AVG-2863 AVG-2865 AVG-2866

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-31257 updated 2026-11-04 cvss 8.8

webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash

Red Hat Enterprise Linux 6 webkitgtk
affected: workaround, no fix planned “Out of support scope”
Red Hat Enterprise Linux 7 webkitgtk3, libwebkit2gtk
affected: workaround, no fix planned “Will not fix”
Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3 2.48.2-1.el8_10, webkit2gtk3-jsc 2.48.2-1.el8_10
fixed: vendor fix RHSA-2025:8046
Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3 2.48.2-1.el9_6, webkit2gtk3-jsc 2.48.2-1.el9_6
fixed: vendor fix RHSA-2025:7995
Red Hat Enterprise Linux AppStream AUS (v.8.4) webkit2gtk3 2.48.2-1.el8_4, webkit2gtk3-jsc 2.48.2-1.el8_4
fixed: vendor fix RHSA-2025:8530
Red Hat Enterprise Linux AppStream AUS (v.8.6) webkit2gtk3 2.48.2-1.el8_6, webkit2gtk3-jsc 2.48.2-1.el8_6 Red Hat Enterprise Linux AppStream E4S (v.8.6) webkit2gtk3 2.48.2-1.el8_6, webkit2gtk3-jsc 2.48.2-1.el8_6
fixed: vendor fix RHSA-2025:8541
Red Hat Enterprise Linux AppStream E4S (v.8.8) webkit2gtk3 2.48.2-1.el8_8, webkit2gtk3-jsc 2.48.2-1.el8_8
fixed: vendor fix RHSA-2025:8532
Red Hat Enterprise Linux AppStream E4S (v.9.0) webkit2gtk3 2.48.2-1.el9_0, webkit2gtk3-jsc 2.48.2-1.el9_0
fixed: vendor fix RHSA-2025:8533

show 5 more

Red Hat Enterprise Linux AppStream E4S (v.9.2) webkit2gtk3 2.48.2-1.el9_2, webkit2gtk3-jsc 2.48.2-1.el9_2
fixed: vendor fix RHSA-2025:8600
Red Hat Enterprise Linux AppStream EUS (v.9.4) webkit2gtk3 2.48.2-1.el9_4, webkit2gtk3-jsc 2.48.2-1.el9_4
fixed: vendor fix RHSA-2025:8534
Red Hat Enterprise Linux AppStream TUS (v.8.6) webkit2gtk3 2.48.2-1.el8_6, webkit2gtk3-jsc 2.48.2-1.el8_6
fixed: vendor fix RHSA-2025:8541
Red Hat Enterprise Linux AppStream TUS (v.8.8) webkit2gtk3 2.48.2-1.el8_8, webkit2gtk3-jsc 2.48.2-1.el8_8
fixed: vendor fix RHSA-2025:8532
Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4 2.48.3-2.el7_9, webkitgtk4-jsc 2.48.3-2.el7_9 Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-doc 2.48.3-2.el7_9, webkitgtk4-devel 2.48.3-2.el7_9, webkitgtk4-debuginfo 2.48.3-2.el7_9, webkitgtk4-jsc-devel 2.48.3-2.el7_9
fixed: vendor fix RHSA-2025:10364

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-26-134-10 updated 2026-05-14 cvss 4.7

Siemens SIMATIC

Siemens SIMATIC CN 4100 < 5.0
affected: fixed in V5.0 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 17 mo ago (2025-05-13)

Exploit prediction

1.10% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.7	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L
CNA	3.1	4.7	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L

Affected products

Apple Safari
Apple iOS and iPadOS
Apple macOS
Apple tvOS
Apple visionOS
Apple watchOS
Siemens SIMATIC CN 4100

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

support.apple.com /en-us/122404
release-notes, vendor-advisory
support.apple.com /en-us/122716
release-notes, vendor-advisory
support.apple.com /en-us/122719
release-notes, vendor-advisory
support.apple.com /en-us/122720
release-notes, vendor-advisory
support.apple.com /en-us/122721
release-notes, vendor-advisory
support.apple.com /en-us/122722
release-notes, vendor-advisory
lists.debian.org /debian-lts-announce/2025/06/msg00016.html
seclists.org /fulldisclosure/2025/May/13
seclists.org /fulldisclosure/2025/May/12
seclists.org /fulldisclosure/2025/May/11
seclists.org /fulldisclosure/2025/May/7
seclists.org /fulldisclosure/2025/May/5
cert-portal.siemens.com /productcert/html/ssa-032379.html

Sources

CVE List CVE-2025-31257
NVD CVE-2025-31257

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary