CVE-2005-4827

Exp

Internet Explorer 6.0, and possibly other versions, allows remote attackers to bypass the same origin security policy and make requests outside of the intended domain by calling open on an XMLHttpRequest object (Microsoft.XMLHTTP) and using tab, newline, and carriage return characters within the first argument (method name), which is supported by some proxy servers that convert tabs to spaces. NOTE: this issue can be leveraged to conduct referer spoofing, HTTP Request Smuggling, and other attacks.

Published: 2005-12-31 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2005-4827 is rated High Exploit Risk (73.3/100): CVSS High severity, with high exploitation likelihood (EPSS 10.76%, 95th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2005-4827

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2005-4827

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 2026-06-15 18.54% 10.76% -7.78%
2 2026-03-03 19.03% 18.54% -0.49%
3 2025-09-26 — 19.03% —

Full EPSS history (22 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2005-4827

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P 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:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2005-4827

Affected software / configurations for CVE-2005-4827

Vendor Product Version Raw CPE
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:*:microsoft_windows_server_2003_sp1:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:*:windows_2000:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:*:windows_server_2003:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:*:windows_xp_professional_64bit:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:sp1:windows_98:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:sp1:windows_98_se:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:sp1:windows_millennium:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:sp1:windows_xpsp1:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:windows_2000_sp4:*:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:windows_server_2003_sp1:*:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:windows_server_2003_sp1_itanium:*:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:windows_server_2003_sp1_itanium_systems:*:*:*:*:*:*
microsoft ie 6 cpe:2.3:a:microsoft:ie:6:windows_xp_sp2:*:*:*:*:*:*
microsoft ie 6.0 cpe:2.3:a:microsoft:ie:6.0:*:windows_server:*:*:*:*:*
microsoft ie 6.0 cpe:2.3:a:microsoft:ie:6.0:*:windows_server_2003:*:*:*:*:*
microsoft ie 6.0 cpe:2.3:a:microsoft:ie:6.0:*:windowsxp:*:*:*:*:*
microsoft ie 6.0 cpe:2.3:a:microsoft:ie:6.0:sp1:*:*:*:*:*:*
microsoft ie 6.0 cpe:2.3:a:microsoft:ie:6.0:sp1:windows_2000:*:*:*:*:*
microsoft ie 6.0 cpe:2.3:a:microsoft:ie:6.0:sp1:windows_xp:*:*:*:*:*
microsoft ie 6.0 cpe:2.3:a:microsoft:ie:6.0:sp2:*:*:*:*:*:*
microsoft ie 6.0 cpe:2.3:a:microsoft:ie:6.0:sp2:windows_xp:*:*:*:*:*
microsoft ie 6.0 cpe:2.3:a:microsoft:ie:6.0:windows_xp_sp2:*:*:*:*:*:*
microsoft internet_explorer 6 cpe:2.3:a:microsoft:internet_explorer:6:sp1:*:*:*:*:*:*
microsoft internet_explorer 6.0 cpe:2.3:a:microsoft:internet_explorer:6.0:*:*:*:*:*:*:*
microsoft internet_explorer 6.0.2600 cpe:2.3:a:microsoft:internet_explorer:6.0.2600:*:*:*:*:*:*:*
microsoft internet_explorer 6.0.2800 cpe:2.3:a:microsoft:internet_explorer:6.0.2800:*:*:*:*:*:*:*
microsoft internet_explorer 6.0.2800.1106 cpe:2.3:a:microsoft:internet_explorer:6.0.2800.1106:*:*:*:*:*:*:*
microsoft internet_explorer 6.0.2900.2180 cpe:2.3:a:microsoft:internet_explorer:6.0.2900.2180:*:*:*:*:*:*:*
canon network_camera_server_vb101 — cpe:2.3:h:canon:network_camera_server_vb101:*:*:*:*:*:*:*:*

References for CVE-2005-4827

cvelogic Threat Intelligence