9.8

CVE-2015-0843: debian yubiserver Classic Buffer Overflow

CVSS: 9.8v3.1CriticalAnalyzed
AliasesUBUNTU-CVE-2015-0843DEBIAN-CVE-2015-0843
Published 26-06-2025Last modified 27-06-2025
Open JSON

Vulnerability summary

CVE-2015-0843 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in debian yubiserver. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 37.2% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.45%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 26-06-2025
    PublishedVulnerability first disclosed.
  2. 27-06-2025
    Last modifiedVulnerability information updated.

Description

yubiserver before 0.6 is prone to buffer overflows due to misuse of sprintf.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

+0.03 pp

From 0.41% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.45%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Ubuntu1 product
  • yubiserver< 0.6-3
Yubiserver1 product

3 vendors · 4 products

References

5 links