CVE-2015-3166

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 5.4%, top 10% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 5%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

The snprintf implementation in PostgreSQL before 9.0.20, 9.1.x before 9.1.16, 9.2.x before 9.2.11, 9.3.x before 9.3.7, and 9.4.x before 9.4.2 does not properly handle system-call errors, which allows attackers to obtain sensitive information or have other unspecified impact via unknown vectors, as demonstrated by an out-of-memory error.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
90.6%
KEV
Not listed

Published

November 20, 2019

Last Modified

November 21, 2024

Advisory Details (8)

Auto-updated Jun 21, 2026
No patch confirmed yet.
generic

PostgreSQL: Documentation: 9.4: Release 9.4.2

http://www.postgresql.org/docs/9.4/static/release-9-4-2.html
generic

PostgreSQL: Documentation: 9.3: Release 9.3.7

http://www.postgresql.org/docs/9.3/static/release-9-3-7.html
generic

PostgreSQL: Documentation: 9.2: Release 9.2.11

http://www.postgresql.org/docs/9.2/static/release-9-2-11.html
generic

PostgreSQL: Documentation: 9.1: Release 9.1.16

http://www.postgresql.org/docs/9.1/static/release-9-1-16.html
generic

PostgreSQL: Documentation: 9.0: Release 9.0.20

http://www.postgresql.org/docs/9.0/static/release-9-0-20.html
generic

PostgreSQL: PostgreSQL 9.4.2, 9.3.7, 9.2.11, 9.1.16, and 9.0.20 released!

http://www.postgresql.org/about/news/1587/
generic

[SECURITY] [DSA 3270-1] postgresql-9.4 security update

http://www.debian.org/security/2015/dsa-3270
generic

[SECURITY] [DSA 3269-1] postgresql-9.1 security update

http://www.debian.org/security/2015/dsa-3269

Vendor Advisories for CVE-2015-3166(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupostgresql-9.4 (9.4.2-0ubuntu0.14.10) @ utopic2026-05-27ubuntu
redhatrh-postgresql94-postgresql-0:9.4.4-1.el72015-06-29redhat
redhatpostgresql-0:9.2.13-1.ael7b_12015-06-29redhat
redhatpostgresql92-postgresql-0:9.2.13-1.el72015-06-29redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 35× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-16 16:59 UTCEPSS rescore
  2. 2026-07-16 16:59 UTCEPSS rescore
  3. 2026-07-15 16:54 UTCEPSS rescore
  4. 2026-07-15 16:54 UTCEPSS rescore
  5. 2026-07-15 01:56 UTCEPSS rescore
  6. 2026-07-13 22:26 UTCEPSS rescore
  7. 2026-07-12 05:42 UTCEPSS rescore
  8. 2026-07-11 08:23 UTCEPSS rescore
  9. 2026-07-09 19:05 UTCEPSS rescore
  10. 2026-07-08 15:10 UTCEPSS rescore
  11. 2026-07-07 13:42 UTCEPSS rescore
  12. 2026-07-06 16:24 UTCEPSS rescore
  13. 2026-07-06 02:20 UTCEPSS rescore
  14. 2026-07-05 02:26 UTCEPSS rescore
  15. 2026-07-04 06:27 UTCEPSS rescore
  16. 2026-07-02 15:21 UTCEPSS rescore
  17. 2026-07-01 15:02 UTCEPSS rescore
  18. 2026-07-01 15:02 UTCEPSS rescore
  19. 2026-06-30 23:19 UTCEPSS rescore
  20. 2026-06-30 23:19 UTCEPSS rescore
  21. 2026-06-28 04:53 UTCEPSS rescore
  22. 2026-06-27 03:05 UTCEPSS rescore
  23. 2026-06-25 13:47 UTCEPSS rescore
  24. 2026-06-25 13:47 UTCEPSS rescore
  25. 2026-06-24 14:02 UTCEPSS rescore
Show 45 more
  1. 2026-06-24 14:02 UTCEPSS rescore
  2. 2026-06-23 21:30 UTCEPSS rescore
  3. 2026-06-21 14:54 UTCEPSS rescore
  4. 2026-06-21 01:57 UTCEPSS rescore
  5. 2026-06-21 01:57 UTCEPSS rescore
  6. 2026-06-19 19:23 UTCEPSS rescore
  7. 2026-06-19 19:23 UTCEPSS rescore
  8. 2026-06-18 17:50 UTCEPSS rescore
  9. 2026-06-18 17:49 UTCEPSS rescore
  10. 2026-06-17 17:49 UTCEPSS rescore
  11. 2026-06-16 17:50 UTCEPSS rescore
  12. 2026-06-16 17:49 UTCEPSS rescore
  13. 2026-06-15 17:45 UTCEPSS rescore
  14. 2026-06-14 23:14 UTCEPSS rescore
  15. 2026-06-13 22:57 UTCEPSS rescore
  16. 2026-06-12 23:09 UTCEPSS rescore
  17. 2026-06-11 13:57 UTCEPSS rescore
  18. 2026-06-10 22:15 UTCEPSS rescore
  19. 2026-06-08 14:14 UTCEPSS rescore
  20. 2026-06-07 15:22 UTCEPSS rescore
  21. 2026-06-05 22:44 UTCEPSS rescore
  22. 2026-06-05 06:08 UTCEPSS rescore
  23. 2026-06-05 06:08 UTCEPSS rescore
  24. 2026-06-04 13:10 UTCEPSS rescore
  25. 2026-06-04 13:09 UTCEPSS rescore
  26. 2026-06-02 20:10 UTCEPSS rescore
  27. 2026-06-02 20:10 UTCEPSS rescore
  28. 2026-06-01 13:49 UTCEPSS rescore
  29. 2026-06-01 13:49 UTCEPSS rescore
  30. 2026-05-31 22:28 UTCEPSS rescore
  31. 2026-05-31 22:28 UTCEPSS rescore
  32. 2026-05-31 22:28 UTCEPSS rescore
  33. 2026-05-31 00:14 UTCEPSS rescore
  34. 2026-05-29 13:41 UTCEPSS rescore
  35. 2026-05-28 13:42 UTCEPSS rescore
  36. 2026-05-28 13:42 UTCEPSS rescore
  37. 2026-05-27 13:38 UTCEPSS rescore
  38. 2026-05-27 13:38 UTCEPSS rescore
  39. 2026-05-27 11:26 UTCEG score recompute
  40. 2026-05-27 11:26 UTCVendor advisory
  41. 2026-05-27 11:26 UTCGHSA enrichment
  42. 2026-05-26 13:41 UTCEPSS rescore
  43. 2026-05-26 13:41 UTCEPSS rescore
  44. 2026-05-24 16:43 UTCEPSS rescore
  45. 2026-05-23 15:10 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2015-3166?
CVE-2015-3166 is a critical vulnerability published on November 20, 2019. The snprintf implementation in PostgreSQL before 9.0.20, 9.1.x before 9.1.16, 9.2.x before 9.2.11, 9.3.x before 9.3.7, and 9.4.x before 9.4.2 does not properly handle system-call errors, which allows attackers to obtain sensitive information or have other unspecified impact via unknown vectors, as…
When was CVE-2015-3166 disclosed?
CVE-2015-3166 was first published in the National Vulnerability Database on November 20, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-3166 actively exploited?
CVE-2015-3166 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2015-3166?
CVE-2015-3166 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2015-3166?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-3166, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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