How severe is CVE-2021-27417?

CVE-2021-27417 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2021-27417 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27417?

CVE-2021-27417 affects Ecoscentric Ecospro. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27417?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-27417 published?

CVE-2021-27417 was published on 2022-05-03 and last updated on 2026-06-17.

CVE-2021-27417

CVE-2021-27417 is a medium-severity vulnerability in Ecoscentric Ecospro with a CVSS 3.x base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
CVSS v2: 7.5
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Ecoscentric Ecospro
Published: 2022-05-03
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-27417?: 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.
How severe is CVE-2021-27417?: CVE-2021-27417 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2021-27417 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27417?: CVE-2021-27417 affects Ecoscentric Ecospro. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27417?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-27417 published?: CVE-2021-27417 was published on 2022-05-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ecoscentric:ecospro:*:*:*:*:*:*:*:*

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