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TI-2026-86067 Aliases CVE-2026-119923GHSA-g64g-7679-7c73

Heap buffer overflow in Babelfish for PostgreSQL TDS prelogin parser

Priority MEDIUM 49CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

Babelfish for PostgreSQL extension versions from 1.0 through 1.5, 2.1 through 2.15, 3.1 through 3.12, 4.0 through 4.8 and 5.1 through 5.4, and Amazon Aurora PostgreSQL with Babelfish builds before the fixed releases listed below, contain a heap-based buffer overflow (CWE-122) in the TDS prelogin parser. A remote attacker can send a specially crafted malformed prelogin packet to the TDS port, which might allow arbitrary OS commands to run as the database process user without authentication.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

A heap-based buffer overflow in the TDS prelogin parser in the Babelfish for PostgreSQL extension versions 1.0-1.5, 2.1-2.15, 3.1-3.12, 4.0-4.8, 5.1-5.4 and in Amazon Aurora PostgreSQL with Babelfish might allow remote attackers to execute arbitrary OS commands as the database process user via a specially crafted malformed TDS prelogin packet to the TDS port. This record consolidates a related NULL-pointer-dereference finding in the same prelogin parser. To remediate this issue, we recommend users upgrade to Babelfish for PostgreSQL extension versions 4.10, 5.6, 6.1 or later. As a workaround, restrict network access to the TDS port (default 1433). Customers using Amazon Aurora PostgreSQL with Babelfish should upgrade their cluster to Aurora PostgreSQL 13.9.16 (1.5.5), 13.23.3 (1.17.2), 14.6.16 (2.3.5), 14.17.8 (2.12.4), 14.18.6 (2.13.3), 14.19.5 (2.14.2), 14.20.5 (2.15.2), 14.22.3 (2.16.1), 14.23.1 (2.17.0), 15.10.8 (3.8.4), 15.12.8 (3.9.4), 15.13.6 (3.10.3), 15.14.5 (3.11.2), 15.15.5 (3.12.2), 15.17.3 (3.13.1), 15.18.1 (3.14.0), 16.8.8 (4.5.5), 16.9.6 (4.6.3), 16.10.5 (4.7.2), 16.11.5 (4.8.2), 16.13.3 (4.9.1), 16.14.1 (4.10.0), 17.4.8 (5.1.4), 17.5.6 (5.2.3), 17.6.5 (5.3.2), 17.7.5 (5.4.2), 17.9.3 (5.5.1), 17.10.1 (5.6.0), 18.3.4 (6.0.2), 18.4.1 (6.1.0) or later, and apply any pending maintenance to ensure they are on the latest patch.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00621 50th percentileScored 2026-11-07
Fix Fixed Amazon Aurora PostgreSQL with Babelfish (Amazon): 1.5.5, 1.17.2, 2.3.5 +21

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AWSbabelfish-for-postgresql1.0 – 1.5; 2.1 – 2.15; 3.1 – 3.12; 4.0 – 4.8; 5.1 – 5.4—No fix listedCNA
AWSAmazon Aurora PostgreSQL with Babelfish1.0.0 to before 1.5.5; 1.6.0 to before 1.17.2; 2.0.0 to before 2.3.5; 2.4.0 to before 2.12.4; 2.13.0 to before 2.13.3; 2.14.0 to before 2.14.2; 2.15.0 to before 2.15.2; 2.16.0 to before 2.16.1; 3.0.0 to before 3.8.4; 3.9.0 to before 3.9.4; 3.10.0 to before 3.10.3; 3.11.0 to before 3.11.2; 3.12.0 to before 3.12.2; 3.13.0 to before 3.13.1; 4.0.0 to before 4.5.5; 4.6.0 to before 4.6.3; 4.7.0 to before 4.7.2; 4.8.0 to before 4.8.2; 4.9.0 to before 4.9.1; 5.0.0 to before 5.1.4; 5.2.0 to before 5.2.3; 5.3.0 to before 5.3.2; 5.4.0 to before 5.4.2; 5.5.0; 6.0.0 to before 6.0.21.5.5, 1.17.2, 2.3.5, 2.12.4, 2.13.3, 2.14.2, 2.15.2, 2.16.1, 3.8.4, 3.9.4, 3.10.3, 3.11.2, 3.12.2, 3.13.1, 4.5.5, 4.6.3, 4.7.2, 4.8.2, 4.9.1, 5.1.4, 5.2.3, 5.3.2, 5.4.2, 6.0.2Patch availableCNA
  • babelfish-for-postgresql VendorAWS Affected 1.0 – 1.5; 2.1 – 2.15; 3.1 – 3.12; 4.0 – 4.8; 5.1 – 5.4 Fixed in — No fix listed CNA
  • Amazon Aurora PostgreSQL with Babelfish VendorAWS Affected 1.0.0 to before 1.5.5; 1.6.0 to before 1.17.2; 2.0.0 to before 2.3.5; 2.4.0 to before 2.12.4; 2.13.0 to before 2.13.3; 2.14.0 to before 2.14.2; 2.15.0 to before 2.15.2; 2.16.0 to before 2.16.1; 3.0.0 to before 3.8.4; 3.9.0 to before 3.9.4; 3.10.0 to before 3.10.3; 3.11.0 to before 3.11.2; 3.12.0 to before 3.12.2; 3.13.0 to before 3.13.1; 4.0.0 to before 4.5.5; 4.6.0 to before 4.6.3; 4.7.0 to before 4.7.2; 4.8.0 to before 4.8.2; 4.9.0 to before 4.9.1; 5.0.0 to before 5.1.4; 5.2.0 to before 5.2.3; 5.3.0 to before 5.3.2; 5.4.0 to before 5.4.2; 5.5.0; 6.0.0 to before 6.0.2 Fixed in 1.5.5, 1.17.2, 2.3.5, 2.12.4, 2.13.3, 2.14.2, 2.15.2, 2.16.1, 3.8.4, 3.9.4, 3.10.3, 3.11.2, 3.12.2, 3.13.1, 4.5.5, 4.6.3, 4.7.2, 4.8.2, 4.9.1, 5.1.4, 5.2.3, 5.3.2, 5.4.2, 6.0.2 Patch available CNA

Remediation

Upgrade the Babelfish for PostgreSQL extension to version 4.10, 5.6, 6.1 or later. Customers on Amazon Aurora PostgreSQL with Babelfish should upgrade their clusters to Aurora PostgreSQL 13.9.16 (1.5.5), 16.14.1 (4.10.0) or 18.4.1 (6.1.0) or later and apply pending maintenance. As a workaround, restrict network access to the TDS port (default 1433).

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Amazon Aurora PostgreSQL with Babelfish (Amazon) Fixed in 1.5.5, 1.17.2, 2.3.5, 2.12.4, 2.13.3, 2.14.2, 2.15.2, 2.16.1, 3.8.4, 3.9.4, 3.10.3, 3.11.2, 3.12.2, 3.13.1, 4.5.5, 4.6.3, 4.7.2, 4.8.2, 4.9.1, 5.1.4, 5.2.3, 5.3.2, 5.4.2, 6.0.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    AWS Amazon Aurora PostgreSQL with Babelfish, babelfish-for-postgresql — aws.amazon.com/security/security-bulletins/2026-166-aws

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-86068 Out-of-bounds read in Babelfish for PostgreSQL TDS RPC parserPriority LOW 32
    Show all 2 records → Advisory →

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-119923
  2. 2026-11-06 CISA SSVC decision points changed
  3. 2026-11-06 Alias added: GHSA-g64g-7679-7c73
  4. 2026-11-07 1 new reference · CNA

References

Patch 3

Advisory 2

  • TI-2026-23989 crypto: algif_aead - Revert to operating out-of-place KEVCVSS 3.1HIGH 7.8
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2024-18648 Amazon AWS Amplify CLI before 12.10.1 incorrectly configures the role trust policy of IAM… CVSS 3.1CRITICAL 9.8
  • TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
  • TI-2025-03847 Input validation issue in AWS Amplify Studio UI component properties CVSS 4.0CRITICAL 9.0
  • TI-2026-11603 HTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAF CVSS 4.0HIGH 7.9
See all 383 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences