How severe is CVE-2023-28504?

CVE-2023-28504 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-28504 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28504?

CVE-2023-28504 primarily affects Rocketsoftware Unidata. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-28504?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-28504 published?

CVE-2023-28504 was published on 2023-03-29 and last updated on 2026-06-17.

CVE-2023-28504

CVE-2023-28504 is a critical-severity vulnerability in Rocketsoftware Unidata with a CVSS 3.x base score of 9.8. 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-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Rocketsoftware Unidata
Published: 2023-03-29
Last modified: 2026-06-17

Description

Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1 build 2002 suffer from a stack-based buffer overflow that can lead to remote code execution as the root user.

Frequently asked questions

What is CVE-2023-28504?: Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1 build 2002 suffer from a stack-based buffer overflow that can lead to remote code execution as the root user.
How severe is CVE-2023-28504?: CVE-2023-28504 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-28504 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28504?: CVE-2023-28504 primarily affects Rocketsoftware Unidata. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-28504?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-28504 published?: CVE-2023-28504 was published on 2023-03-29 and last updated on 2026-06-17.

References

https://www.rapid7.com/blog/post/2023/03/29/multiple-vulnerabilities-in-rocket-software-unirpc-server-fixed/

Affected products (2)

cpe:2.3:a:rocketsoftware:unidata:*:*:*:*:*:*:*:*
cpe:2.3:a:rocketsoftware:universe:*:*:*:*:*:*:*:*

More vulnerabilities in Rocketsoftware Unidata

CVE-2023-28507 — Critical (CVSS 9.8): Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1…
CVE-2023-28503 — Critical (CVSS 9.8): Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1…
CVE-2023-28502 — Critical (CVSS 9.8): Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1…
CVE-2023-28501 — Critical (CVSS 9.8): Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1…
CVE-2023-28508 — High (CVSS 8.8): Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1…
CVE-2023-28506 — High (CVSS 8.8): Rocket Software UniData versions prior to 8.2.4 build 3003 and UniVerse versions prior to 11.3.5 build 1001 or 12.2.1…

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