CVE-2026-86313: samsung opensource walrus Out-of-bounds Write
CVSS: 7.8v3.1HighDeferred
Published 07-09-2026Last modified 08-09-2026
Vulnerability summary
CVE-2026-86313 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in samsung opensource walrus. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (CVE.org)EPSS score
0.17%
0%100%
Low · +0.05 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 07-09-2026PublishedVulnerability first disclosed.
- 08-09-2026Last modifiedVulnerability information updated.
Description
Out-of-bounds write vulnerability in Samsung Opensource Walrus allows Overflow Buffers. This issue affects Walrus: af80e665ea49d9003695a66502f841ed1d8397e7.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.17%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
+0.05 pp
From 0.12% on 20-09-2026
20-09-202620-10-2026
EPSS score0.17%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Samsung opensource1 product
- walrusaf80e665ea49d9003695a66502f841ed1d8397e7
1 vendor · 1 product