10

CVE-1999-0526: x.org x11

CVSS: 10.0v2.0HighModified
Published 29-09-1999Last modified 01-08-2024
Open JSON

Vulnerability summary

CVE-1999-0526 is a high (CVSS 10.0) vulnerability in x.org x11. EPSS estimates a 20.82% chance of exploitation in the next 30 days, higher than 97.5% of scored vulnerabilities. 3 public exploits are recorded.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
10.0/10
010
High · v2.0 (NVD)
EPSS score
20.82%
0%100%
High · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits3metasploit

Timeline

  1. 29-09-1999
    PublishedVulnerability first disclosed.
  2. 01-08-2024
    Last modifiedVulnerability information updated.

Description

An X server's access control is disabled (e.g. through an "xhost +" command) and allows anyone to connect to the server.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

20.82%

Chance of exploitation in the next 30 days

Percentile

98%

Versus all other CVEs

30-day change

0.00 pp

From 20.82% on 19-09-2026

19-09-202619-10-2026
EPSS score
20.82%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

3 found
  • MetasploitMetasploitremoteUnverified

    X11 Keylogger

    auxiliary/gather/x11_keyboard_spy

    Maturity: poc

  • MetasploitMetasploitremoteUnverified

    X11 No-Auth Scanner

    auxiliary/scanner/x11/open_x11

    Maturity: poc

  • MetasploitMetasploitremoteVerified

    X11 Keyboard Command Injection

    exploit/unix/x11/x11_keyboard_exec

    Maturity: weaponized

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

X.org1 product

1 vendor · 1 product

References

1 links