CVE-2024-6443: zephyrproject-rtos zephyr Out-of-bounds Read
CVSS: 6.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2024-6443
Published 04-10-2024Last modified 04-10-2024
Vulnerability summary
CVE-2024-6443 is a medium (CVSS 6.5) Out-of-bounds Read vulnerability in zephyrproject-rtos zephyr. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 48.3% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
0.61%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 04-10-2024PublishedVulnerability first disclosed.
- 04-10-2024Last modifiedVulnerability information updated.
Description
In utf8_trunc in zephyr/lib/utils/utf8.c, last_byte_p can point to one byte before the string pointer if the string is empty.
CVSS metrics
3 scores · 3 sources · 1 versionMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSources3 sources · 6.3–6.5
- CVE.orgCNA6.3MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:LDiffers
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.61%
Chance of exploitation in the next 30 days
Percentile
48%
Versus all other CVEs
30-day change
0.00 pp
From 0.61% on 21-09-2026
21-09-202621-10-2026
EPSS score0.61%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundZephyr
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Ubuntu1 product
- zephyrAll versions (No fix recorded)
Zephyrproject1 product
- zephyr≤ 3.6.0
Zephyrproject-rtos1 product
- zephyr≤ 3.6
3 vendors · 3 products
References
3 links- github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-gg46-3rh2-v765REPORTExploitVendor Advisory