CVE-2023-32331Network attack vector

Service interruption via browser UI buffer overflow

Published Mar 4, 2024 · Updated Aug 2, 2024

Buffer overflow in IBM Sterling Connect:Express for UNIX 1.5 allows remote attackers to interrupt service through its browser UI. IBM has not disclosed the affected browser UI handler, input field, or memory operation that exceeds the destination buffer. The browser UI must be network-reachable; exploitation requires no authentication or user interaction and affects availability only.

CVSS severity7.5
High
EPSS probability0.70%
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 IBM Sterling Connect:Express for UNIX 1.5 allows remote attackers to interrupt service through its browser UI. IBM has not disclosed the affected browser UI handler, input field, or memory operation that exceeds the destination buffer. The browser UI must be network-reachable; exploitation requires no authentication or user interaction and affects availability only.

The record

CVE
CVE-2023-32331
Published
Mar 4, 2024
Updated
Aug 2, 2024
Vendor
IBM
Product
IBM Sterling Connect:Express for UNIX
Classifications
CWE-119, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=1.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Sterling Connect:Express for UNIXversion=1.5.0

Published CVSS scores

7.5IBM CorporationCVSS:3.1/AV:N/AC:L/PR:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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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