CVE-2015-0293

MEDIUMCVSS v2 · 5.05.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:N/I:N/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 21.2% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Elevated
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 21%CVSS v2: 5.0Exploit: Elevated riskExposed: 0

A fix is available — apply it.

The SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (s2_lib.c assertion failure and daemon exit) via a crafted CLIENT-MASTER-KEY message.

CVSS v2.0 (legacy)
5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.0(low)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity50% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
21%
EPSS %ILE
97%
KEV
Not listed

Published

March 19, 2015

Last Modified

May 6, 2026

References (108)

Vendor Advisories for CVE-2015-0293(4)

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

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibssl0.9.8 (0.9.8k-7ubuntu8.27) @ lucid2026-05-28ubuntu
redhatopenssl2016-03-22redhat
redhatpatch2016-03-14redhat
redhatopenssl098e-0:0.9.8e-29.el7_2.32016-03-09redhat
redhatopenssl-0:0.9.8e-26.el5_9.52016-03-01redhat
redhatopenssl-0:0.9.7a-43.23.el42016-03-01redhat
redhatopenssl-0:1.0.1e-16.el6_5.162016-03-01redhat
redhatopenssl-0:0.9.8e-33.el5_112015-04-13redhat
redhatopenssl-0:1.0.1e-30.el6_6.72015-03-30redhat
redhatopenssl-1:1.0.1e-42.ael7b_1.42015-03-23redhat

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 (19 versions)0.9.8o-4squeeze20—

Weakness Classification(1)

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

Additional Vendor Advisories

(8)

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 5× in last 7d / 18× 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 130 total refreshes for this CVE.

  1. 2026-09-15 03:05 UTCEPSS rescore
  2. 2026-09-12 14:55 UTCEPSS rescore
  3. 2026-09-11 09:31 UTCEPSS rescore
  4. 2026-09-10 09:26 UTCEPSS rescore
  5. 2026-09-09 23:23 UTCOSV refresh
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  14. 2026-08-23 01:36 UTCOSV refresh
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  25. 2026-08-07 04:27 UTCOSV refresh
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  10. 2026-07-26 13:52 UTCEG score recompute▲ 5.00
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  13. 2026-07-23 01:15 UTCEG score recompute
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  28. 2026-07-13 22:26 UTCEPSS rescore
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  37. 2026-07-04 15:56 UTCOSV refresh
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  63. 2026-06-16 03:39 UTCOSV refresh
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Frequently asked(4)

What is CVE-2015-0293?
CVE-2015-0293 is a medium vulnerability published on March 19, 2015. The SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (s2_lib.c assertion failure and daemon exit) via a crafted CLIENT-MASTER-KEY message.
When was CVE-2015-0293 disclosed?
CVE-2015-0293 was first published in the National Vulnerability Database on March 19, 2015, 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-2015-0293 actively exploited?
CVE-2015-0293 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21% probability of exploitation in the next 30 days, which ranks it in the top 2.5% of all scored CVEs.
How do I remediate CVE-2015-0293?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-0293, 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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