7.5

CVE-2012-4392: owncloud owncloud_server Improper Authentication

CVSS: 7.5v2.0HighModified
Published 05-09-2012Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2012-4392 is a high (CVSS 7.5) Improper Authentication vulnerability in owncloud owncloud_server. EPSS estimates a 2.80% chance of exploitation in the next 30 days, higher than 86.3% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
41/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v2.0 (NVD)
EPSS score
2.80%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 05-09-2012
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

index.php in ownCloud 4.0.7 does not properly validate the oc_token cookie, which allows remote attackers to bypass authentication via a crafted oc_token cookie value.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.80%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

0.00 pp

From 2.80% on 21-09-2026

21-09-202621-10-2026
EPSS score
2.80%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Core

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Owncloud1 product

1 vendor · 1 product

References

3 links