How severe is CVE-2021-38423?

CVE-2021-38423 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.

Is CVE-2021-38423 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38423?

CVE-2021-38423 affects Gurum Gurumdds. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38423?

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

When was CVE-2021-38423 published?

CVE-2021-38423 was published on 2022-05-05 and last updated on 2026-06-17.

CVE-2021-38423

CVE-2021-38423 is a medium-severity vulnerability in Gurum Gurumdds with a CVSS 3.x base score of 6.6. 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-131.

Key facts

Severity: Medium (CVSS 3.x base score 6.6)
CVSS v2: 7.5
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-131
Affected product: Gurum Gurumdds
Published: 2022-05-05
Last modified: 2026-06-17

Description

All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result in a buffer overflow.

Frequently asked questions

What is CVE-2021-38423?: All versions of GurumDDS improperly calculate the size to be used when allocating the buffer, which may result in a buffer overflow.
How severe is CVE-2021-38423?: CVE-2021-38423 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.
Is CVE-2021-38423 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38423?: CVE-2021-38423 affects Gurum Gurumdds. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38423?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-38423 published?: CVE-2021-38423 was published on 2022-05-05 and last updated on 2026-06-17.

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02

Affected products (1)

cpe:2.3:a:gurum:gurumdds:*:*:*:*:*:*:*:*

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