CVE-2025-43501: apple ios and ipados Out-of-bounds Write
CVSS: 4.3v3.1MediumModified
AliasesUBUNTU-CVE-2025-43501DEBIAN-CVE-2025-43501
Published 17-12-2025Last modified 02-04-2026
Vulnerability summary
CVE-2025-43501 is a medium (CVSS 4.3) Out-of-bounds Write vulnerability in apple ios and ipados. EPSS estimates a 0.77% chance of exploitation in the next 30 days, higher than 54.9% of scored vulnerabilities.
CVSS score
4.3/10
010
Medium · v3.1 (CVE.org)EPSS score
0.77%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 20 · Related 6DLA-4414-1DSA-6083-1MGASA-2025-0331OPENSUSE-SU-2026:20065-1RHSA-2025:23663RHSA-2025:23700RHSA-2025:23967RHSA-2025:23968RHSA-2025:23969RHSA-2025:23970RHSA-2025:23971RHSA-2025:23972RHSA-2025:23973RHSA-2025:23974RHSA-2025:23975SUSE-SU-2025:4527-1SUSE-SU-2025:4528-1SUSE-SU-2026:0021-1SUSE-SU-2026:20102-1USN-7957-1
Timeline
- 17-12-2025PublishedVulnerability first disclosed.
- 02-04-2026Last modifiedVulnerability information updated.
Description
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, visionOS 26.2. Processing maliciously crafted web content may lead to an unexpected process crash.
CVSS metrics
4 scores · 4 sources · 1 versionMedium 4.3Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated4.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated4.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
- NVDNIST4.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
EPSS trend
Probability
0.77%
Chance of exploitation in the next 30 days
Percentile
55%
Versus all other CVEs
30-day change
0.00 pp
From 0.77% on 19-09-2026
19-09-202619-10-2026
EPSS score0.77%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
- CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
Affected systems
Apple6 products
- ios and ipados< 18.7.3 | < 26.2
- ipados< 18.7.3 | ≥ 26.0, < 26.2
- iphone_os< 18.7.3 | ≥ 26.0, < 26.2
- macos< 26.2
- safari< 26.2
Ubuntu5 products
- qtwebkit-opensource-srcAll versions (No fix recorded)
- qtwebkit-sourceAll versions (No fix recorded)
- webkit2gtkAll versions (No fix recorded) | < 2.50.4-0ubuntu0.22.04.1 | < 2.50.4-0ubuntu0.24.04.1 | < 2.50.4-0ubuntu0.25.10.1
- webkitgtkAll versions (No fix recorded)
- wpewebkitAll versions (No fix recorded)
Debian2 products
- webkit2gtk< 2.50.4-1~deb12u1 | < 2.50.4-1~deb13u1 | < 2.50.4-1
- wpewebkitAll versions (No fix recorded) | < 2.50.4-1
3 vendors · 13 products
