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CVE-2015-0843

25
FAUCET Score

CVE-2015-0843 describes a critical buffer overflow vulnerability in yubiserver prior to version 0.6, specifically affecting Debian yubiserver. This flaw, stemming from the misuse of sprintf, allows for unauthenticated, low-complexity network attacks that can lead to complete compromise of confidentiality, integrity, and availability. Despite its critical CVSS score of 9.8, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
0.2-2CPE matchmatch criteria
cpe:2.3:a:debian:yubiserver:0.2-2:*:*:*:*:*:*:*
0.5-2CPE matchmatch criteria
cpe:2.3:a:debian:yubiserver:0.5-2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 9th percentile among its peer group of 36,835 CVEs.

Social Chatter

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

Remediation records are not available for this CVE.

References

bugs.debian.org / 796495
Issue TrackingMailing ListVendor Advisory
include.gr / debian/yubiserver
Release Notes