CVE-2022-28331Network attack vector

Code execution via socket-send integer overflow

Published Jan 31, 2023 · Updated Mar 27, 2025

Integer overflow in Apache Portable Runtime 1.7.0 and earlier on Windows allows remote attackers to execute code via vectored socket writes. The apr_socket_sendv() routine performs overflowing integer arithmetic that causes a write beyond the end of its stack buffer. A Windows application must expose a network path that supplies attacker-influenced vectors to this call; successful corruption can execute code or terminate that process.

CVSS severity9.8
Critical
EPSS probability1.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Apache Portable Runtime 1.7.0 and earlier on Windows allows remote attackers to execute code via vectored socket writes. The apr_socket_sendv() routine performs overflowing integer arithmetic that causes a write beyond the end of its stack buffer. A Windows application must expose a network path that supplies attacker-influenced vectors to this call; successful corruption can execute code or terminate that process.

The record

CVE
CVE-2022-28331
Published
Jan 31, 2023
Updated
Mar 27, 2025
Vendor
The Apache Software Foundation
Product
Apache Portable Runtime (APR)
Classifications
CWE-190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 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 <=1.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Portable Runtime (APR)version=0 <=1.7.0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound

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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