CVE-2006-6840

Unspecified vulnerability in phpBB before 2.0.22 has unknown impact and remote attack vectors related to a "negative start parameter."

Published: 2006-12-31 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-6840 is rated Moderate Risk (58.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.38%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2006-6840

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 1.25% 0.38% -0.87%
2 2025-03-29 0.38% 1.25% +0.87%
3 2025-03-17 — 0.38% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-6840

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2006-6840

OS Trackers for CVE-2006-6840

vendor priority summary link
alpine — CVE-2006-6840: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-2006-6840
ubuntu low CVE-2006-6840 low priority: Ubuntu including 1 source packages (phpbb2), 9 status rows across 9 suites (dapper, edgy, feisty, gutsy, hardy, intrepid, jaunty, karmic, upstream): released 4, DNE 2, ignored 2, needs-triage 1. https://ubuntu.com/security/CVE-2006-6840

Affected software / configurations for CVE-2006-6840

Vendor Product Version Raw CPE
phpbb_group phpbb 1.2.4_rc3 cpe:2.3:a:phpbb_group:phpbb:1.2.4_rc3:*:*:*:*:*:*:*
phpbb_group phpbb 2.0.18 cpe:2.3:a:phpbb_group:phpbb:2.0.18:*:*:*:*:*:*:*
phpbb_group phpbb 2.0.20 cpe:2.3:a:phpbb_group:phpbb:2.0.20:*:*:*:*:*:*:*
phpbb_group phpbb 2.0.21 cpe:2.3:a:phpbb_group:phpbb:2.0.21:*:*:*:*:*:*:*

References for CVE-2006-6840

cvelogic Threat Intelligence