CVE-2009-0958

Apple iPhone OS 1.0 through 2.2.1 and iPhone OS for iPod touch 1.1 through 2.2.1 stores an exception for a hostname when the user accepts an untrusted Exchange server certificate, which causes it to be accepted without prompting in future usage and allows remote Exchange servers to obtain sensitive information such as credentials.

Published: 2009-06-19 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-0958 is rated Low Risk (37.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.94%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2009-0958

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 0.25% 0.94% +0.69%
2 2025-03-17 0.14% 0.25% +0.12%
3 2023-03-07 — 0.14% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-0958

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2009-0958

Affected software / configurations for CVE-2009-0958

Vendor Product Version Raw CPE
apple iphone_os 1.0.0 cpe:2.3:o:apple:iphone_os:1.0.0:*:*:*:*:*:*:*
apple iphone_os 1.0.1 cpe:2.3:o:apple:iphone_os:1.0.1:*:*:*:*:*:*:*
apple iphone_os 1.0.2 cpe:2.3:o:apple:iphone_os:1.0.2:*:*:*:*:*:*:*
apple iphone_os 1.1.0 cpe:2.3:o:apple:iphone_os:1.1.0:*:*:*:*:*:*:*
apple iphone_os 1.1.1 cpe:2.3:o:apple:iphone_os:1.1.1:*:*:*:*:*:*:*
apple iphone_os 1.1.2 cpe:2.3:o:apple:iphone_os:1.1.2:*:*:*:*:*:*:*
apple iphone_os 1.1.3 cpe:2.3:o:apple:iphone_os:1.1.3:*:*:*:*:*:*:*
apple iphone_os 1.1.4 cpe:2.3:o:apple:iphone_os:1.1.4:*:*:*:*:*:*:*
apple iphone_os 1.1.5 cpe:2.3:o:apple:iphone_os:1.1.5:*:*:*:*:*:*:*
apple iphone_os 2.0 cpe:2.3:o:apple:iphone_os:2.0:*:*:*:*:*:*:*
apple iphone_os 2.0.0 cpe:2.3:o:apple:iphone_os:2.0.0:*:*:*:*:*:*:*
apple iphone_os 2.0.1 cpe:2.3:o:apple:iphone_os:2.0.1:*:*:*:*:*:*:*
apple iphone_os 2.0.2 cpe:2.3:o:apple:iphone_os:2.0.2:*:*:*:*:*:*:*
apple iphone_os 2.1 cpe:2.3:o:apple:iphone_os:2.1:*:*:*:*:*:*:*
apple iphone_os 2.1.1 cpe:2.3:o:apple:iphone_os:2.1.1:*:*:*:*:*:*:*
apple iphone_os 2.2 cpe:2.3:o:apple:iphone_os:2.2:*:*:*:*:*:*:*
apple iphone_os 2.2.1 cpe:2.3:o:apple:iphone_os:2.2.1:*:*:*:*:*:*:*
apple iphone_os — cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple ipod_touch — cpe:2.3:h:apple:ipod_touch:*:*:*:*:*:*:*:*

References for CVE-2009-0958

cvelogic Threat Intelligence