CVE-2024-32655Public exploitNetwork attack vector

Arbitrary SQL execution via Bind message overflow

Published May 9, 2024 · Updated Dec 12, 2024

SQL injection in affected Npgsql releases allows remote attackers to execute arbitrary SQL through oversized parameter values. WriteBind uses 32-bit integers for the PostgreSQL Bind message length and combined parameter lengths, so overflow declares a frame smaller than the bytes actually sent. Exploitation requires an application path accepting parameters totaling more than two gigabytes; PostgreSQL parses trailing bytes as attacker-chosen messages under the application's database privileges.

CVSS severity8.1
High
EPSS probability1.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in affected Npgsql releases allows remote attackers to execute arbitrary SQL through oversized parameter values. WriteBind uses 32-bit integers for the PostgreSQL Bind message length and combined parameter lengths, so overflow declares a frame smaller than the bytes actually sent. Exploitation requires an application path accepting parameters totaling more than two gigabytes; PostgreSQL parses trailing bytes as attacker-chosen messages under the application's database privileges.

The record

CVE
CVE-2024-32655
Published
May 9, 2024
Updated
Dec 12, 2024
Vendor
Npgsql
Product
Npgsql
Classifications
CWE-89, CWE-20, CWE-190, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 12, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 4.0.0, < 4.0.14
  2. Affected versionversion=4.0.0 <4.0.14
  3. Affected versionversion=>= 4.1.0, < 4.1.13
  4. Affected versionversion=4.1.0 <4.1.13
  5. Affected versionversion=>= 5.0.0, < 5.0.18
  6. Affected versionversion=5.0.0 <5.0.18
  7. Affected versionversion=>= 6.0.0, < 6.0.11
  8. Affected versionversion=6.0.0 <6.0.11
  9. Affected versionversion=>= 7.0.0, < 7.0.7
  10. Affected versionversion=7.0.0 <8.0.3
  11. Affected versionversion=>= 8.0.0, < 8.0.3
  12. Affected versionversion=8.0.0 <8.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Npgsql · Npgsqlversion=>= 4.0.0, < 4.0.14; version=4.0.0 <4.0.14; version=>= 4.1.0, < 4.1.13; version=4.1.0 <4.1.13; version=>= 5.0.0, < 5.0.18; version=5.0.0 <5.0.18; version=>= 6.0.0, < 6.0.11; version=6.0.0 <6.0.11; version=>= 7.0.0, < 7.0.7; version=7.0.0 <8.0.3; version=>= 8.0.0, < 8.0.3; version=8.0.0 <8.0.3

Published CVSS scores

8.1GitHubCVSS:3.1/AV:N/AC:H/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 exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CWE-20Improper Input Validation
CWE-190Integer Overflow or Wraparound
T1190Exploit Public-Facing Application

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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