CVE-2024-10977Network attack vector

Query-output spoofing via retained negotiation errors

Published Nov 14, 2024 · Updated Nov 3, 2025

Improper validation in PostgreSQL libpq before 17.1, 16.5, 15.9, 14.14, 13.17, and 12.21 allows man-in-the-middle attackers to spoof query output. During SSL or GSS negotiation, fe-connect.c preserves and reports arbitrary non-NUL bytes from an untrusted server instead of discarding them before encryption is established. A victim must use a client that does not clearly distinguish connection errors from other text and then trust the forged output; no direct data disclosure or service interruption is reported.

CVSS severity3.1
Low
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper validation in PostgreSQL libpq before 17.1, 16.5, 15.9, 14.14, 13.17, and 12.21 allows man-in-the-middle attackers to spoof query output. During SSL or GSS negotiation, fe-connect.c preserves and reports arbitrary non-NUL bytes from an untrusted server instead of discarding them before encryption is established. A victim must use a client that does not clearly distinguish connection errors from other text and then trust the forged output; no direct data disclosure or service interruption is reported.

The record

CVE
CVE-2024-10977
Published
Nov 14, 2024
Updated
Nov 3, 2025
Vendor
PostgreSQL Global Development Group
Product
PostgreSQL
Classifications
CWE-348, T1565.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 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 <12.21
  2. Affected versionversion=13 <13.17
  3. Affected versionversion=14 <14.14
  4. Affected versionversion=15 <15.9
  5. Affected versionversion=16 <16.5
  6. Affected versionversion=17 <17.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PostgreSQL Global Development Group · PostgreSQLversion=0 <12.21; version=13 <13.17; version=14 <14.14; version=15 <15.9; version=16 <16.5; version=17 <17.1

Published CVSS scores

3.1PostgreSQLCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

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-348Use of Less Trusted Source
T1565.002Transmitted Data Manipulation

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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