CVE-2021-27417

4.6 MEDIUM 0.6% exploit odds Fix listed

What it is

eCosCentric eCosPro RTOS Versions 2.0.1 through 4.5.3 are vulnerable to integer wraparound in function calloc (an implementation of malloc). The unverified memory assignment can lead to arbitrary memory allocation, resulting in a heap-based buffer overflow.

At a glance

Exploitability: Can be exploited locally on the machine with an admin-level account, but needs a user to act. High risk of service disruption.
Exploit odds: 0.6% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2022-05-03 21:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 03:44 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.6% in the next 30 days (EPSS).
Severity: 4.6 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2022-05-03 21:15 UTC
Last modified: 2026-06-17 03:44 UTC
Exploit probability: 0.6% · EPSS, next 30 days
Weakness: CWE-190 · Integer overflow
Record status: Modified

Affected

Ecoscentric Ecospro ≤ 4.5.3

Attack profile CVSS 3.1 · 4.6

Attack vector: Local
Complexity: High
Privileges needed: High
User interaction: Required
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: High

Raw vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:H

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-27417.md and follow it. Check whether this project is affected by CVE-2021-27417. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record