CVE-2015-3197

MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2022-05-17. NVD baseline CVSS 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 11%CVSS: 5.9Exploit: Elevated riskExposed: 0

A fix is available — apply it.

ssl/s2_srvr.c in OpenSSL 1.0.1 before 1.0.1r and 1.0.2 before 1.0.2f does not prevent use of disabled ciphers, which makes it easier for man-in-the-middle attackers to defeat cryptographic protection mechanisms by performing computations on SSLv2 traffic, related to the get_client_master_key and get_client_hello functions.

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 PROB
11%
EPSS %ILE
95%
KEV
Not listed

Published

February 15, 2016

Last Modified

June 17, 2026

References (72)

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatopenssl2016-03-22redhat
redhatpatch2016-03-14redhat
redhatrhev-hypervisor7-0:7.2-20160302.1.el7ev2016-03-09redhat
redhatopenssl098e-0:0.9.8e-29.el7_2.32016-03-09redhat
redhatopenssl-1:1.0.1e-42.ael7b_1.102016-03-01redhat
redhatopenssl-0:1.0.1e-16.el6_5.162016-03-01redhat
redhatopenssl-0:0.9.7a-43.23.el42016-03-01redhat
redhatopenssl-0:0.9.8e-39.el5_112016-03-01redhat
redhatopenssl-0:0.9.8e-26.el5_9.52016-03-01redhat
redhatopenssl-1:1.0.1e-51.el7_2.42016-03-01redhat

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
openssl—1.0.0c-2—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
openssl—1.0.0c-2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
openssl—1.0.0c-2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
openssl—1.0.0c-2—
Debian:6.0(1)
PackageVulnerable rangeFixed inDependents
openssl0.9.8o-4 ... 0.9.8o-4squeeze9 (22 versions)0.9.8o-4squeeze23—

Weakness Classification(2)

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

All Vendor Advisories

(11)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 26× 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 119 total refreshes for this CVE.

  1. 2026-08-21 23:44 UTCEPSS rescore
  2. 2026-08-20 22:50 UTCEPSS rescore
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  25. 2026-07-23 01:17 UTCEG score recompute
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2015-3197?
CVE-2015-3197 is a medium vulnerability published on February 15, 2016. ssl/s2srvr.c in OpenSSL 1.0.1 before 1.0.1r and 1.0.2 before 1.0.2f does not prevent use of disabled ciphers, which makes it easier for man-in-the-middle attackers to defeat cryptographic protection mechanisms by performing computations on SSLv2 traffic, related to the getclientmasterkey and…
When was CVE-2015-3197 disclosed?
CVE-2015-3197 was first published in the National Vulnerability Database on February 15, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-3197 actively exploited?
CVE-2015-3197 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11% probability of exploitation in the next 30 days, which ranks it in the top 4.5% of all scored CVEs.
What is the CVSS score of CVE-2015-3197?
CVE-2015-3197 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2015-3197?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-3197, 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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