7.5

CVE-2021-3510: zephyrproject-rtos zephyr

CVSS: 7.5v3.1HighModified
Published 05-10-2021Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2021-3510 is a high (CVSS 7.5) vulnerability in zephyrproject-rtos zephyr. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 60.9% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.96%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-10-2021
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

Zephyr JSON decoder incorrectly decodes array of array. Zephyr versions >= >1.14.0, >= >2.5.0 contain Attempt to Access Child of a Non-structure Pointer (CWE-588). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-289f-7mw3-2qf4

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.96%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

0.00 pp

From 0.96% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.96%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Zephyrproject1 product
  • zephyr1.14.0 | 1.14.0:rc1 | 1.14.0:rc2 | 1.14.0:rc3 | 1.14.1 | 1.14.1:rc1 | 1.14.1:rc2 | 1.14.1:rc3 | 1.14.2 | 1.14.3:rc1 | 1.14.3:rc2 | 2.5.0 | 2.5.0:rc1 | 2.5.0:rc2 | 2.5.0:rc3 | 2.5.0:rc4 | 2.5.1:rc1 | 2.6.0 | 2.6.0:rc1 | 2.6.0:rc2 | 2.6.0:rc3 | 2.6.1:rc1
Zephyrproject-rtos1 product
  • zephyr≥ >1.14.0, < unspecified | ≥ >2.5.0, < unspecified

2 vendors · 2 products

References

1 links