What is CVE-2023-28506?

CVE-2023-28506 is a high-severity vulnerability in Linux Kernel, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2023-03-29.

How severe is CVE-2023-28506?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Linux Kernel

CVE-2023-28506

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, where a string is copied into a buffer using a memcpy-like function and a user-provided length. This requires a valid login to exploit.

Vulnerability class: Buffer Overflow

Published 2023-03-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Weakness classification (CWE)

References

www.rapid7.com/blog/post/2023/03/29/multiple-vulnerabilities-in-rocket-software… (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2023-28506?: CVE-2023-28506 is a high-severity vulnerability in Linux Kernel, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2023-03-29.
How severe is CVE-2023-28506?: High severity. CVSS v3 base score is 8.8 out of 10.