What’s Vulnerable › Vulnerabilities

CVE-2021-27417: eCosCentric eCosPro RTOS Integer Overflow or Wraparound

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-03 · updated 2026-06-17
• Weakness: CWE-190

Description

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.

Affected products

• eCosCentric eCosPro RTOS: from 2.0.1 through 4.5.3

References

• https://bugzilla.ecoscentric.com/show_bug.cgi?id=1002437
• https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04
• https://bugzilla.ecoscentric.com/show_bug.cgi?id=1002437
• https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04

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