CVE-2026-20652: apple ios and ipados Uncontrolled Resource Consumption
CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2026-20652DEBIAN-CVE-2026-20652CGA-2946-3gfm-23fpCGA-2vhx-fcj6-62m3CGA-2x3w-45rp-5mfwCGA-2x56-8v29-r87hCGA-2xxq-p6g3-hmc8CGA-33m5-vrq4-v3j3CGA-36p8-q45v-cpc2CGA-3jh4-q46g-wrqvCGA-3rxc-7699-vqc8CGA-3v7p-p475-mhghCGA-3xhj-jw3w-8jp7CGA-532h-g6j4-6q72CGA-57jp-c7vp-ghgqCGA-5h9p-5v2x-ph2xCGA-5q67-php7-px77CGA-63rh-hj8f-vcvcCGA-69g5-cj7m-5v95CGA-6f23-j5p3-99pfCGA-6fj7-3wjw-jxcpCGA-6p5v-c3fq-qvq8CGA-6pg2-qgx8-3fcxCGA-728f-7394-pg52CGA-7r4h-p8fw-7f6gCGA-7rmp-75rw-3f3pCGA-867h-fjjh-jj3jCGA-882w-97rp-54r5CGA-89cj-8rc8-8jh9CGA-8vcc-vrj9-6m2wCGA-92hr-3j2q-5mp5CGA-9935-vjq6-w2cfCGA-9ffh-wq9w-vhg8CGA-9mc2-mgrr-997rCGA-9p29-7vh4-v2v2CGA-9pf9-rxgr-mppxCGA-9x9c-8m8m-7wvhCGA-c2f4-j4qv-m93pCGA-c6r7-4qqc-gpc6CGA-f229-f5x6-h7mcCGA-fmc4-j445-rp6wCGA-fvhf-6h7m-hfjfCGA-fwcr-3pm7-j2jvCGA-fx82-6jp4-4w8hCGA-g4q2-ghmm-x925CGA-g552-86mm-9fcrCGA-gj44-6xw5-3xjqCGA-h6q9-p7rq-c4h5CGA-h997-hcm8-rv5gCGA-hgqj-p8qv-5fc4CGA-hvch-84c8-ffqqCGA-j3rg-3g3q-2p22CGA-j7vc-rrpx-wq5gCGA-j8q8-6rpr-fjqjCGA-mc8v-x4g9-x4q8CGA-mmr3-mc7m-c2mrCGA-mp74-qpgq-xxg3CGA-mwgw-gqx5-ppjrCGA-p9xf-cp7w-47w7CGA-pj73-hf35-x6jvCGA-qvqq-2mjf-xmjjCGA-r4rv-5p8p-f37vCGA-rcf8-ggwh-p5v5CGA-rcx6-2w45-jhhhCGA-rffq-hg2m-hwxvCGA-rhp6-mmc5-7rpxCGA-rp8c-pm6f-xfq2CGA-rw28-5hmc-gwh2CGA-v352-jjf9-f2x4CGA-v67x-hcc5-5vv4CGA-vf7h-6qmw-4j2xCGA-vjj6-rf8f-p45fCGA-w2pr-prg6-7h6cCGA-wgp3-jv39-4rr8CGA-wm3w-2h6c-wp54CGA-x236-5mvq-fx5jCGA-x32r-8m9q-53p5CGA-x5fv-7h8r-hqxmCGA-xcr7-q979-hfm3CGA-xxcg-8mc9-5xj4
Published 11-02-2026Last modified 15-07-2026
Vulnerability summary
CVE-2026-20652 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in apple ios and ipados. EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 52.1% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
0.70%
0%100%
Low · +0.08 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 18 · Related 7DSA-6172-1MGASA-2026-0064OPENSUSE-SU-2026:20518-1RHSA-2026:10702RHSA-2026:11329RHSA-2026:11814RHSA-2026:13845RHSA-2026:14659RHSA-2026:16056RHSA-2026:16695RHSA-2026:19206RHSA-2026:19535RHSA-2026:22136RHSA-2026:9692SUSE-SU-2026:1139-1SUSE-SU-2026:1150-1SUSE-SU-2026:1364-1SUSE-SU-2026:21180-1CGA-JQ5C-HX26-2942USN-8237-1
Timeline
- 11-02-2026PublishedVulnerability first disclosed.
- 15-07-2026Last modifiedVulnerability information updated.
Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. A remote attacker may be able to cause a denial-of-service.
CVSS metrics
5 scores · 5 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 5 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.70%
Chance of exploitation in the next 30 days
Percentile
52%
Versus all other CVEs
30-day change
+0.08 pp
From 0.62% on 18-09-2026
18-09-202618-10-2026
EPSS score0.70%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
- 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
Chainguard39 products
- openjdk-11-openj9< 0.59.0-r2
- openjdk-11-openj9-dbg< 0.59.0-r2
- openjdk-11-openj9-default-jdk< 0.59.0-r2
- openjdk-11-openj9-default-jvm< 0.59.0-r2
- openjdk-11-openj9-doc< 0.59.0-r2
Apple6 products
- ios and ipados< 18.7.5 | < 26.3
- ipados< 18.7.5 | ≥ 26.0, < 26.3
- iphone_os< 18.7.5 | ≥ 26.0, < 26.3
- macos< 26.3
- safari< 26.3
Ubuntu5 products
- qtwebkit-opensource-srcAll versions (No fix recorded)
- qtwebkit-sourceAll versions (No fix recorded)
- webkit2gtkAll versions (No fix recorded) | < 2.52.3-0ubuntu0.24.04.1 | < 2.52.3-0ubuntu0.25.10.1
- webkitgtkAll versions (No fix recorded)
- wpewebkitAll versions (No fix recorded)
Debian2 products
- webkit2gtk< 2.50.6-1~deb12u1 | < 2.50.6-1~deb13u1 | < 2.50.6-1
- wpewebkitAll versions (No fix recorded) | < 2.50.6-1
4 vendors · 52 products
