CVE-2015-0204

MEDIUMCVSS v2 · 4.34.3
EchelonGraph scoreLOW confidence

“—” beside the score: it is equal to NVD's CVSS v2 base score.

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.3 — NVD rates that MEDIUM (NVD's v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; no CRITICAL band). Vector AV:N/AC:M/Au:N/C:N/I:P/A:N. 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 99% exploitation probability in the next 30 days; it does not lift the v2 base. EPSS sets EG Risk's exploitation input. Confidence: LOW.

Triggered by: NVD CVSS v2.0 (legacy fallback)
Sources: NVD CVSS v2.0
Trending — 5 sources updated this weekElevated

Also known asEUVD-2015-0241 (ENISA EUVD) · GHSA-ff55-77ff-xv8x (GitHub Security Advisories)Source: ENISA EUVD

4.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High exploitation likelihood — EPSS 99%
  • Public exploit or proof-of-concept code is available
CISA-KEV: Not listedEPSS PROB: 99%CVSS v2: 4.3Exploit: Public PoCExposed services: Not assessed

A fix is available — apply it.

The ssl3_get_key_exchange function in s3_clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allows remote SSL servers to conduct RSA-to-EXPORT_RSA downgrade attacks and facilitate brute-force decryption by offering a weak ephemeral RSA key in a noncompliant role, related to the "FREAK" issue. NOTE: the scope of this CVE is only client code based on OpenSSL, not EXPORT_RSA issues associated with servers or other TLS implementations.

CVSS v2.0 (legacy)
4.3MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
4.3MEDIUMlow confidence
EG Risk
59
EG Risk 59/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity43% × 45%
Impact severity (EG Severity): CVSS 4.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation99% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
99%
EPSS %ILE
99th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (4.3): severity, escalated by confirmed exploitation. This CVE's 4.3 is its impact severity (EG Severity), not escalated.

EG Severity
4.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v2.0 · CVSS v2.0AV:N/AC:M/Au:N/C:N/I:P/A:N
EG Likelihood
99% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-28). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

January 9, 2015

Last Modified

October 14, 2026

References (66)

15 of 66 shown · show the other 51

Vendor Advisories for CVE-2015-0204(2)

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

Patch Availability(6)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibssl1.0.0 (1.0.1-4ubuntu5.21) @ precise2026-10-29ubuntu
redhatopenssl2016-08-22redhat
redhatpatch2015-05-13redhat
redhatpatch2015-04-16redhat
redhatopenssl-0:0.9.8e-33.el5_112015-04-13redhat
redhatopenssl-1:1.0.1e-34.el7_0.72015-01-21redhat

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

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
openssl—
  • every version up to 1.0.1k-1: fixed in 1.0.1k-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
openssl—
  • every version up to 1.0.1k-1: fixed in 1.0.1k-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
openssl—
  • every version up to 1.0.1k-1: fixed in 1.0.1k-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
openssl—
  • every version up to 1.0.1k-1: fixed in 1.0.1k-1
—
Debian:6.0(1)
PackageVulnerable rangeFix by version rangeDependents
openssl0.9.8o-4 ... 0.9.8o-4squeeze9 (18 versions)
  • every version up to 0.9.8o-4squeeze19: fixed in 0.9.8o-4squeeze19
—
Debian:7(1)
PackageVulnerable rangeFix by version rangeDependents
openssl1.0.1e-2 ... 1.0.1e-2+deb7u9 (14 versions)
  • every version up to 1.0.1e-2+deb7u14: fixed in 1.0.1e-2+deb7u14
—

Weakness Classification(1)

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

Additional Vendor Advisories

(4)

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 6× in last 7d / 17× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 11 repeat rows among the latest 77 are merged into the row they repeat.

  1. 2026-10-29 14:23 UTCEG score recompute
  2. 2026-10-29 14:23 UTCVendor advisory
  3. 2026-10-29 14:23 UTCGHSA enrichmentGHSA-ff55-77ff-xv8x
  4. 2026-10-27 14:55 UTCOSV refresh
  5. 2026-10-25 19:58 UTCEG score recompute
  6. 2026-10-25 16:26 UTCEPSS rescoreEPSS 99% · 99th percentile
  7. 2026-10-18 11:06 UTCEG score recompute
  8. 2026-10-15 16:26 UTCEPSS rescoreEPSS 99% · 99th percentile
  9. 2026-10-14 22:31 UTCVendor advisory
  10. 2026-10-14 22:31 UTCGHSA enrichmentGHSA-ff55-77ff-xv8x
  11. 2026-10-14 22:25 UTCNVD update
  12. 2026-10-14 21:24 UTCEG score recompute
  13. 2026-10-14 21:24 UTCVendor advisory
  14. 2026-10-14 21:24 UTCGHSA enrichmentGHSA-ff55-77ff-xv8x
  15. 2026-10-14 21:24 UTCMITRE cvelistV5
  16. 2026-10-12 21:12 UTCEG score recompute
  17. 2026-10-12 01:19 UTCEG score recompute
  18. 2026-10-01 05:10 UTCOSV refresh
  19. 2026-09-30 09:00 UTCEG score recompute
  20. 2026-09-12 07:10 UTCOSV refresh
  21. 2026-09-06 13:42 UTCEPSS rescoreEPSS 99% · 99th percentile
  22. 2026-09-05 15:23 UTCEPSS rescoreEPSS 99% · 99th percentile
  23. 2026-08-24 12:30 UTCOSV refresh
  24. 2026-08-21 23:44 UTCEPSS rescoreEPSS 99% · 99th percentile
  25. 2026-08-12 13:46 UTCEPSS rescoreEPSS 99% · 99th percentile
Show 41 more
  1. 2026-08-08 16:31 UTCEPSS rescoreEPSS 99% · 99th percentile
  2. 2026-08-08 08:19 UTCOSV refresh
  3. 2026-08-07 16:22 UTCEPSS rescoreEPSS 99% · 99th percentile
  4. 2026-08-06 13:42 UTCEPSS rescoreEPSS 99% · 99th percentile
  5. 2026-08-04 15:04 UTCEPSS rescoreEPSS 99% · 99th percentile
  6. 2026-07-26 13:52 UTCEG score recomputeAssessed again: 4.3 MEDIUM
  7. 2026-07-23 01:21 UTCVendor advisory
  8. 2026-07-23 01:20 UTCGHSA enrichmentGHSA-ff55-77ff-xv8x
  9. 2026-07-23 01:18 UTCVendor advisory
  10. 2026-07-23 01:18 UTCGHSA enrichmentGHSA-ff55-77ff-xv8x
  11. 2026-07-23 01:17 UTCVendor advisory
  12. 2026-07-23 01:17 UTCGHSA enrichmentGHSA-ff55-77ff-xv8x
  13. 2026-07-23 01:15 UTCEG score recompute▼ 9.00
  14. 2026-07-23 00:18 UTCEG score recompute
  15. 2026-07-22 21:57 UTCEG score recompute
  16. 2026-07-21 22:48 UTCOSV refresh
  17. 2026-07-19 02:26 UTCEPSS rescoreEPSS 99% · 99th percentile
  18. 2026-07-09 19:05 UTCEPSS rescoreEPSS 99% · 99th percentile
  19. 2026-07-04 17:56 UTCOSV refresh
  20. 2026-07-01 15:02 UTCEPSS rescoreEPSS 99% · 99th percentile
  21. 2026-06-30 23:19 UTCEPSS rescoreEPSS 99% · 99th percentile
  22. 2026-06-27 03:05 UTCEPSS rescoreEPSS 99% · 99th percentile
  23. 2026-06-24 14:02 UTCEPSS rescoreEPSS 99% · 99th percentile
  24. 2026-06-17 17:49 UTCEPSS rescoreEPSS 99% · 99th percentile
  25. 2026-06-16 17:49 UTCEPSS rescoreEPSS 99% · 99th percentile
  26. 2026-06-16 05:13 UTCOSV refresh
  27. 2026-06-15 17:45 UTCEPSS rescoreEPSS 99% · 99th percentile
  28. 2026-06-12 23:09 UTCEPSS rescoreEPSS 92% · 99th percentile
  29. 2026-06-11 13:57 UTCEPSS rescoreEPSS 92% · 99th percentile
  30. 2026-06-10 22:15 UTCEPSS rescoreEPSS 92% · 99th percentile
  31. 2026-06-08 14:14 UTCEPSS rescoreEPSS 92% · 99th percentile
  32. 2026-06-04 13:09 UTCEPSS rescoreEPSS 92% · 99th percentile
  33. 2026-05-29 13:41 UTCEPSS rescoreEPSS 92% · 99th percentile
  34. 2026-05-28 14:12 UTCEG score recompute
  35. 2026-05-28 14:12 UTCVendor advisory
  36. 2026-05-28 14:12 UTCGHSA enrichmentGHSA-ff55-77ff-xv8x
  37. 2026-05-28 13:42 UTCEPSS rescoreEPSS 92% · 99th percentile
  38. 2026-05-23 15:10 UTCEPSS rescoreEPSS 92% · 99th percentile
  39. 2026-05-22 21:15 UTCEPSS rescoreEPSS 92% · 99th percentile
  40. 2026-05-20 11:21 UTCEPSS rescoreEPSS 92% · 99th percentile
  41. 2026-05-18 21:30 UTCEPSS rescoreEPSS 92% · 99th percentile

Publicly available exploits

(4 references)

Public exploit code is referenced for this CVE (1 GitHub PoC), as are 3 GitHub checker repositories. A GitHub repository named or described as a checker or scanner checks whether a system is affected; it is not necessarily exploit code. Defenders should treat patch urgency accordingly.

  • GitHub checkeranthophilee/A2SV--SSL-VUL-Scan
    Published Jan 1, 2021

    A2SV = Auto Scanning to SSL Vulnerability HeartBleed, CCS Injection, SSLv3 POODLE, FREAK... etc Support Vulnerability [CVE-2007-1858] Anonymous Cipher [CVE-2012-4929] CRIME(SPDY) [CVE-2014-0160] CCS Injection [CVE-2014-0224] HeartBleed [CVE-2014-3566] SSLv3 POODLE [CVE-2015-0204] FREAK Attack [CVE-2015-4000] LOGJAM Attack [CVE-2016-0800] SSLv2 DROWN Installation : $ apt update && apt upgrade $ apt install git $ apt install python2 $ apt install python $ git clone https://github.com/hahwul/ a2sv $ cd a2sv $ chmod +x * $ pip2 install -r requirements.txt usage : $ python2 a2sv.py -h It shows all commands how we can use this tool $ python a2sv.py -t 127.0.0.1 127.0.0.1 = target means here own device

    Open source ↗
  • GitHub PoCAbhishekGhosh/FREAK-Attack-CVE-2015-0204-Testing-Script
    Published Mar 6, 2015

    Basic BASH Script to Automate OpenSSL based testing for FREAK Attack (CVE-2015-0204) as advised by Akamai.

    Open source ↗
  • GitHub checkerscottjpack/Freak-Scanner
    Published Mar 5, 2015

    Multithreaded FREAK scanner, used to detect SSL EXP Ciphers, vulnerable to CVE-2015-0204

    Open source ↗
  • GitHub checkerfelmoltor/FreakVulnChecker
    Published Mar 4, 2015

    This script check if your list of server is accepting Export cipher suites and could be vulnerable to CVE-2015-0204

    Open source ↗

Frequently asked(4)

What is CVE-2015-0204?
CVE-2015-0204 is a medium-severity vulnerability; its CVE record was published on January 9, 2015. The ssl3getkeyexchange function in s3clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allows remote SSL servers to conduct RSA-to-EXPORTRSA downgrade attacks and facilitate brute-force decryption by offering a weak ephemeral RSA key in a noncompliant role, related to…
When was CVE-2015-0204 made public?
CVE-2015-0204 was made public on January 8, 2015: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on January 9, 2015. EchelonGraph's copy of the record carries a last-modified date of October 14, 2026; the record at its source may have been updated since.
Is CVE-2015-0204 actively exploited?
CVE-2015-0204 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
How do I remediate CVE-2015-0204?
A fix for CVE-2015-0204 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2015-0204 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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