4.3

CVE-2015-0204: openssl Cryptographic Issues

Modified
AliasesUBUNTU-CVE-2015-0204DEBIAN-CVE-2015-0204
Published 09-01-2015Last modified 14-10-2026

Vulnerability summary

CVE-2015-0204 is a medium (CVSS 4.3) Cryptographic Issues vulnerability in openssl. EPSS estimates a 98.69% chance of exploitation in the next 30 days, higher than 99.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.3/10
010
Medium · v2.0 (NVD)
EPSS score
98.69%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 17 · Related 12
DLA-132-1DSA-3125-1MGASA-2015-0022OPENSUSE-SU-2024:11127-1RHSA-2015:0066RHSA-2015:0800

Timeline

  1. 09-01-2015
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

98.69%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

No change 0.00 pp

From 98.69% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • openssl< 1.0.1k-1
Openssl1 product
  • openssl≤ 0.9.8zc | 1.0.0a | 1.0.0b | 1.0.0c | 1.0.0d | 1.0.0e | 1.0.0f | 1.0.0g | 1.0.0h | 1.0.0i | 1.0.0j | 1.0.0k | 1.0.0l | 1.0.0m | 1.0.0n | 1.0.0o | 1.0.1a | 1.0.1b | 1.0.1c | 1.0.1d | 1.0.1e | 1.0.1f | 1.0.1g | 1.0.1h | 1.0.1i | 1.0.1j
Ubuntu1 product
  • openssl< 1.0.1f-1ubuntu2.8

3 vendors · 3 products

References

70 links
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