What’s Vulnerable › Vulnerabilities

CVE-2021-38423: GurumDDS Heap-based Incorrect Calculation of Buffer Size

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-05 · updated 2026-06-17
• Weakness: CWE-131

Description

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

Affected products

• GurumNetworks GurumDDS: all versions

References

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

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