CVE-2023-28505Public exploitNetwork attack vector

Remote code execution via unchecked string copy

Published Mar 29, 2023 · Updated Feb 18, 2025

Buffer overflow in Rocket Software UniData and UniVerse allows remote authenticated users to execute code through the UniRPC service. U_get_string_value in libunidata.so passes an attacker-controlled packet string to the unbounded u2strcpy wrapper around strcpy, overwriting a caller-provided stack buffer. A valid login is normally required, but an unremediated UniRPC authentication bypass makes the path reachable without credentials and can yield root execution.

CVSS severity8.1
High
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Rocket Software UniData and UniVerse allows remote authenticated users to execute code through the UniRPC service. U_get_string_value in libunidata.so passes an attacker-controlled packet string to the unbounded u2strcpy wrapper around strcpy, overwriting a caller-provided stack buffer. A valid login is normally required, but an unremediated UniRPC authentication bypass makes the path reachable without credentials and can yield root execution.

The record

CVE
CVE-2023-28505
Published
Mar 29, 2023
Updated
Feb 18, 2025
Vendor
Rocket Software
Product
UniData
Classifications
CWE-120, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <8.2.43.3003

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Rocket Software · UniDataversion=0 <8.2.43.3003
Rocket Software · UniVerseversion=0 <11.3.5.1001; version=0 <12.2.1.2002

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1210Exploitation of Remote Services

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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