CVE-2015-0204
MediumExploitedThe 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…
Published Jan 9, 2015 · Updated Oct 14, 2026 · Also known as DEBIAN-CVE-2015-0204, FREAK, SUSE-SU-2015:2166-1, SUSE-SU-2015:2168-1, SUSE-SU-2015:2168-2, SUSE-SU-2015:2182-1, SUSE-SU-2015:2192-1, SUSE-SU-2015:2216-1, UBUNTU-CVE-2015-0204
Key Facts
Patch immediately- CVE-2015-0204 is a medium-severity vulnerability (CVSS 5.3 v3.1) affecting Openssl, rootio-openssl, openssl-devel (amazon) and 22 more products.
- It is exploited in the wild, listed in Industry KEV feed since Apr 26, 2016. No public exploit code is known.
- EPSS estimates a 99% probability of exploitation in the next 30 days.
- Fixed versions are available, including compat-openssl097g 0.9.7g-146.22.1, compat-openssl097g 0.9.7g-146.22.31.1, compat-openssl097g-32bit 0.9.7g-146.22.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
5.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS (30-day exploit likelihood)
99%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
None known
Get the full CVE-2015-0204 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Apr 26, 2016 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
352 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| OpensslOpenssl | 1.0.0a, 1.0.0b, 1.0.0c, 1.0.0d, 1.0.0e, 1.0.0f, 1.0.0g, 1.0.0h | 0.9.8zc |
| rootio-opensslrootio | See advisory | 1.0.1k-1 |
| openssl-develamazon | See advisory | 1:1.0.1k-1.82.amzn1 |
| openssl-perlamazon | See advisory | 1:1.0.1k-1.82.amzn1 |
| openssl-staticamazon | See advisory | 1:1.0.1k-1.82.amzn1 |
Patched Releases
compat-openssl097g
0.9.7g-146.22.1, 0.9.7g-146.22.31.1
compat-openssl097g-32bit
0.9.7g-146.22.1, 0.9.7g-146.22.31.1
compat-openssl098
0.9.8j-70.2
java-1_6_0-ibm
1.6.0_sr15.0-0.5.1, 1.6.0_sr16.15-27.1, 1.6.0_sr16.15-46.1, 1.6.0_sr16.2-0.3.1, 1.6.0_sr16.4-15.1
java-1_6_0-ibm-alsa
1.6.0_sr15.0-0.5.1, 1.6.0_sr16.0-0.3.1, 1.6.0_sr16.15-46.1, 1.6.0_sr16.2-0.3.1
java-1_6_0-ibm-devel
1.6.0_sr16.0-0.3.1, 1.6.0_sr16.15-46.1, 1.6.0_sr16.2-0.3.1
java-1_6_0-ibm-fonts
1.6.0_sr15.0-0.5.1, 1.6.0_sr16.15-27.1, 1.6.0_sr16.15-46.1, 1.6.0_sr16.2-0.3.1, 1.6.0_sr16.4-15.1
java-1_6_0-ibm-jdbc
1.6.0_sr15.0-0.5.1, 1.6.0_sr16.15-27.1, 1.6.0_sr16.15-46.1, 1.6.0_sr16.2-0.3.1, 1.6.0_sr16.4-15.1
java-1_6_0-ibm-plugin
1.6.0_sr15.0-0.5.1, 1.6.0_sr16.15-27.1, 1.6.0_sr16.15-46.1, 1.6.0_sr16.2-0.3.1, 1.6.0_sr16.4-15.1
java-1_7_0-ibm
1.7.0_sr6.0-0.7.1, 1.7.0_sr8.0-0.5.1, 1.7.0_sr9.20-42.1
java-1_7_0-ibm-alsa
1.7.0_sr6.0-0.7.1, 1.7.0_sr8.0-0.5.1, 1.7.0_sr9.20-42.1
java-1_7_0-ibm-devel
1.7.0_sr7.0-0.5.1, 1.7.0_sr8.0-0.5.1, 1.7.0_sr9.20-42.1
java-1_7_0-ibm-jdbc
1.7.0_sr6.0-0.7.1, 1.7.0_sr8.0-0.5.1, 1.7.0_sr9.20-42.1
java-1_7_0-ibm-plugin
1.7.0_sr6.0-0.7.1, 1.7.0_sr8.0-0.5.1, 1.7.0_sr9.20-42.1
java-1_7_1-ibm
1.7.1_sr3.20-18.1, 1.7.1_sr3.20-6.1
java-1_7_1-ibm-alsa
1.7.1_sr3.20-18.1, 1.7.1_sr3.20-6.1
java-1_7_1-ibm-devel
1.7.1_sr3.20-18.1, 1.7.1_sr3.20-6.1
java-1_7_1-ibm-jdbc
1.7.1_sr3.20-18.1, 1.7.1_sr3.20-6.1
java-1_7_1-ibm-plugin
1.7.1_sr3.20-18.1, 1.7.1_sr3.20-6.1
libmysql55client_r18
5.5.39-0.7.1
libmysql55client_r18-32bit
5.5.39-0.7.1
libmysql55client_r18-x86
5.5.39-0.7.1
libmysql55client18
5.5.39-0.7.1
libmysql55client18-32bit
5.5.39-0.7.1
libmysql55client18-x86
5.5.39-0.7.1
Timeline
Publicly disclosed
Jan 9, 2015
Added to Industry KEV feed
Apr 26, 2016
Last updated
Oct 14, 2026
Weakness Type
- CWE-310
- CWE-1240 Use of a Cryptographic Primitive with a Risky Implementation
References
- advisoryRHEA-2015:0955
- advisoryRHSA-2015:0066
- advisoryRHSA-2015:0800
- advisoryRHSA-2015:0849
- advisoryRHSA-2016:1650
FAQ
Common Questions.
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" issu…
Affected: Openssl versions 1.0.0a, 1.0.0b, 1.0.0c, 1.0.0d, 1.0.0e, 1.0.0f, 1.0.0g, 1.0.0h; rootio-openssl; openssl-devel (amazon), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Apr 26, 2016.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including compat-openssl097g 0.9.7g-146.22.1, compat-openssl097g 0.9.7g-146.22.31.1, compat-openssl097g-32bit 0.9.7g-146.22.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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