Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2015-3278

24
FAUCET Score

CVE-2015-3278 describes a critical vulnerability in the nss_compat_ossl project, specifically within its cipherstring parsing code when operating in multi-keyword mode. This flaw prevents the software from correctly matching expected cipher sets, potentially allowing attackers to achieve significant impact through unspecified vectors. With a CVSS v3 score of 9.8 (CRITICAL), this vulnerability is remotely exploitable with low attack complexity, leading to high impacts on confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:nss_compat_ossl_project:nss_compat_ossl:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.51%
Probability of exploitation in next 30 days
EPSS Percentile
71.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0151 is in the 59th percentile among its peer group of 36,897 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nss_compat_ossl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: nss_compat_ossl

Vendor Advisories (1)

redhatCVE-2015-3278Moderate

nss_compat_ossl: incorrect multi-keyword mode cipherstring parsing

Jul 15, 2015

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party AdvisoryVDB Entry