CVE-2015-3166

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 4.6%, top 9% 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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 5%CVSS: 9.8Exploit: None knownExposed: 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)
EG Risk
50(Track)
EG Risk 50/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation5% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
5%
EPSS %ILE
91%
KEV
Not listed

Published

November 20, 2019

Last Modified

November 21, 2024

Advisory Details (8)

Auto-updated Sep 22, 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.

Affected Packages

(4 across 3 ecosystems)
Debian:8(2)
PackageVulnerable rangeFixed inDependents
postgresql-9.19.1.15-0+deb8u19.1.16-0+deb8u1—
postgresql-9.49.4.1-19.4.2-0+deb8u1—
Debian:6.0(1)
PackageVulnerable rangeFixed inDependents
postgresql-8.48.4.10-0squeeze1 ... 8.4.9-1 (45 versions)8.4.22lts2-0+deb6u2—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
postgresql-9.19.1.10-0wheezy1 ... 9.1.9-5 (21 versions)9.1.16-0+deb7u1—

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 3× in last 7d / 17× 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.

Showing the most recent 100 of 122 total refreshes for this CVE.

  1. 2026-09-20 20:08 UTCEPSS rescore
  2. 2026-09-19 15:35 UTCEPSS rescore
  3. 2026-09-18 19:22 UTCEPSS rescore
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  10. 2026-09-06 13:42 UTCEPSS rescore
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  15. 2026-08-30 19:12 UTCEPSS rescore
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  1. 2026-08-12 13:46 UTCEPSS rescore
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  14. 2026-07-24 14:13 UTCEPSS rescore
  15. 2026-07-23 14:14 UTCEPSS rescore
  16. 2026-07-23 01:17 UTCEG score recompute
  17. 2026-07-23 00:19 UTCEG score recompute
  18. 2026-07-22 21:58 UTCEG score recompute
  19. 2026-07-22 14:04 UTCEPSS rescore
  20. 2026-07-21 15:21 UTCEPSS rescore
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  22. 2026-07-20 17:03 UTCEPSS rescore
  23. 2026-07-19 14:27 UTCEPSS rescore
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  25. 2026-07-19 02:26 UTCEPSS rescore
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  27. 2026-07-18 10:00 UTCEPSS rescore
  28. 2026-07-16 16:59 UTCEPSS rescore
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  30. 2026-07-15 16:54 UTCEPSS rescore
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  46. 2026-06-30 23:19 UTCEPSS rescore
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  48. 2026-06-28 04:53 UTCEPSS rescore
  49. 2026-06-27 03:05 UTCEPSS rescore
  50. 2026-06-25 13:47 UTCEPSS rescore
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  67. 2026-06-13 22:57 UTCEPSS rescore
  68. 2026-06-12 23:09 UTCEPSS rescore
  69. 2026-06-11 13:57 UTCEPSS rescore
  70. 2026-06-10 22:15 UTCEPSS rescore
  71. 2026-06-08 14:14 UTCEPSS rescore
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  73. 2026-06-05 22:44 UTCEPSS rescore
  74. 2026-06-05 06:08 UTCEPSS rescore
  75. 2026-06-05 06:08 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 5% probability of exploitation in the next 30 days, which ranks it in the top 8.7% of all scored CVEs.
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.

Dependency Blast Radius

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