CVE-2023-28527

Local cdr crash via invalid parameter overflow

Published Dec 9, 2023 · Updated Sep 16, 2024

Heap buffer overflow in IBM Informix Dynamic Server cdr 12.10 and 14.10 allows local users to crash the utility with invalid parameters. The cdr utility fails to bounds-check an invalid parameter before writing to a heap buffer. Invoking the local command is sufficient; the resulting segmentation fault interrupts that cdr process, with no reported code execution or data modification.

CVSS severity6.2
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in IBM Informix Dynamic Server cdr 12.10 and 14.10 allows local users to crash the utility with invalid parameters. The cdr utility fails to bounds-check an invalid parameter before writing to a heap buffer. Invoking the local command is sufficient; the resulting segmentation fault interrupts that cdr process, with no reported code execution or data modification.

The record

CVE
CVE-2023-28527
Published
Dec 9, 2023
Updated
Sep 16, 2024
Vendor
IBM
Product
IBM Informix Dynamic Server
Classifications
CWE-122, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record 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=12.10, 14.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

IBM · IBM Informix Dynamic Serverversion=12.10, 14.10

Published CVSS scores

6.2IBM CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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