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Fencer Vulns
critical 9.8

CVE-2023-28502 in the critical feed json

Stack buffer overflow in UniRPC's udadmin_server service

published 2023-03-29 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-32172

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
59.6%
EPSS 59.6% chance of exploitation in 30 days, percentile 99.1%
public exploits
1
Metasploit

Summary

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 in the "udadmin" service that can lead to remote code execution as the root user.

Patch / fix

  • Rocket Software UniData 8.2.43.3003
  • Rocket Software UniVerse 11.3.5.1001, 12.2.1.2002

Timeline

  1. Published
  2. First public exploit (Metasploit exploit/linux/misc/unidata_udadmin_password_stack_overflow)

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
20 mo ago

Exploit prediction

59.60% chance of exploitation in the next 30 days, higher than 99.1% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Rocket Software UniData
  • Rocket Software UniVerse

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input
  • CWE-787 Out-of-bounds Write

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.