CVE-2015-3152

MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2022-05-14. NVD baseline CVSS 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
5.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 7%CVSS: 5.9Exploit: NoneExposed: 0

A fix is available — apply it.

Oracle MySQL before 5.7.3, Oracle MySQL Connector/C (aka libmysqlclient) before 6.1.3, and MariaDB before 5.5.44 use the --ssl option to mean that SSL is optional, which allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack, aka a "BACKRONYM" attack.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
47(Track)
EG Risk 47/100SSVC: 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
Severity59% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
93.6%
KEV
Not listed

Published

May 16, 2016

Last Modified

May 6, 2026

References (34)

Vendor Advisories for CVE-2015-3152(2)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatmariadb-1:5.5.44-1.ael7b_12015-08-24redhat
redhatrh-mariadb100-mariadb-1:10.0.20-1.el72015-08-20redhat
redhatmariadb55-mariadb-0:5.5.44-1.el72015-08-20redhat

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.

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 13× in last 7d / 40× 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. 2026-07-23 14:14 UTCEPSS rescore
  2. 2026-07-23 01:17 UTCEG score recompute
  3. 2026-07-23 00:19 UTCEG score recompute
  4. 2026-07-22 21:58 UTCEG score recompute
  5. 2026-07-22 14:04 UTCEPSS rescore
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  25. 2026-06-14 23:14 UTCEPSS rescore
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  44. 2026-05-31 00:14 UTCEPSS rescore
  45. 2026-05-29 13:41 UTCEPSS rescore
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  48. 2026-05-27 13:38 UTCEPSS rescore
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  50. 2026-05-26 13:41 UTCEPSS rescore
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  55. 2026-05-23 15:10 UTCEPSS rescore
  56. 2026-05-22 21:15 UTCEPSS rescore
  57. 2026-05-22 21:15 UTCEPSS rescore
  58. 2026-05-22 20:21 UTCEG score recompute
  59. 2026-05-22 20:21 UTCVendor advisory
  60. 2026-05-22 20:21 UTCGHSA enrichment
  61. 2026-05-21 22:40 UTCEPSS rescore
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCduo-labs/mysslstrip
    First seen Apr 5, 2015

    CVE-2015-3152 PoC

    Open source ↗

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2015-3152?
CVE-2015-3152 is a medium vulnerability published on May 16, 2016. Oracle MySQL before 5.7.3, Oracle MySQL Connector/C (aka libmysqlclient) before 6.1.3, and MariaDB before 5.5.44 use the --ssl option to mean that SSL is optional, which allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack, aka a "BACKRONYM" attack.
When was CVE-2015-3152 disclosed?
CVE-2015-3152 was first published in the National Vulnerability Database on May 16, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-3152 actively exploited?
CVE-2015-3152 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2015-3152?
CVE-2015-3152 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2015-3152?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-3152, 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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