CVE-2023-40052Network attack vector

Unauthenticated agent crash via malformed web requests

Published Jan 18, 2024 · Updated Aug 29, 2024

Denial of service in PAS for OpenEdge affected releases allows remote attackers to crash a PASOE agent via a malformed web request. Progress identifies the WEB transport and maps the flaw to an out-of-bounds memory-buffer operation, but has not disclosed the parser or exact invalid access. Network access without authentication or user interaction is sufficient; repeated requests can exhaust surviving processing capacity and disrupt many web application clients.

CVSS severity7.5
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in PAS for OpenEdge affected releases allows remote attackers to crash a PASOE agent via a malformed web request. Progress identifies the WEB transport and maps the flaw to an out-of-bounds memory-buffer operation, but has not disclosed the parser or exact invalid access. Network access without authentication or user interaction is sufficient; repeated requests can exhaust surviving processing capacity and disrupt many web application clients.

The record

CVE
CVE-2023-40052
Published
Jan 18, 2024
Updated
Aug 29, 2024
Vendor
Progress Software Corporation
Product
OpenEdge
Classifications
CWE-119, CAPEC-100, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 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=0 <12.8.0
  2. Affected versionversion=11.7.0 <11.7.18
  3. Affected versionversion=11.7 <11.7.18
  4. Affected versionversion=12.2.0 <12.2.13
  5. Affected versionversion=Innovation Releases <12.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Progress Software Corporation · OpenEdgeversion=0 <12.8.0; version=11.7.0 <11.7.18; version=11.7 <11.7.18; version=12.2.0 <12.2.13; version=Innovation Releases <12.8.0

Published CVSS scores

7.5Progress Software 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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
CAPEC-100Overflow Buffers
T1499.004Application or System Exploitation

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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