Back
CVE-2020-10027
ARC Platform Uses Signed Integer Comparison When Validating Syscall Numbers
High7.8EPSS 0.69%
- Published
- Updated
- Reserved
- Assigned by
- zephyr
Description
An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.
Timeline
ID reserved
By zephyr
- 2 months later
· 2 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| zephyrCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.69% · top 47% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected 1.14.0 – < unspecified
- affected 2.1.0 – < unspecified
References (5)
- https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-35 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/zephyrproject-rtos/zephyr/pull/23328 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/zephyrproject-rtos/zephyr/pull/23500 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/zephyrproject-rtos/zephyr/pull/23499 (opens in a new tab)x_refsource_MISCx_transferred
- https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10027 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-10027)Record last updated .