CVE-2010-0047

Use-after-free vulnerability in WebKit in Apple Safari before 4.0.5 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via vectors related to "HTML object element fallback content."

Published: 2010-03-15 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2010-0047 is rated Moderate Risk (62.1/100): CVSS High severity, with high exploitation likelihood (EPSS 5.04%, 91th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize 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-2010-0047

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 10.32% 5.04% -5.28%
2 2026-02-28 6.26% 10.32% +4.06%
3 2025-06-18 — 6.26% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2010-0047

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0
9.3 2.0 HIGH
AV:N/AC:M/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:M)
Exploitation needs some favorable conditions, but not exceptional ones.
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.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2010-0047

OS Trackers for CVE-2010-0047

vendor priority summary link
redhat critical — https://access.redhat.com/security/cve/CVE-2010-0047
suse high — https://www.suse.com/security/cve/CVE-2010-0047/
ubuntu low CVE-2010-0047 low priority: Ubuntu including 2 source packages (qt4-x11, webkit), 20 status rows across 10 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): ignored 8, not-affected 8, needs-triage 2, DNE 1, released 1. https://ubuntu.com/security/CVE-2010-0047

NVD evaluator notes for CVE-2010-0047

Comment: Per: http://lists.apple.com/archives/security-announce/2010/Mar/msg00000.html 'WebKit CVE-ID: CVE-2010-0047 Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6.1 or later, Mac OS X Server v10.6.1 or later, Windows 7, Vista, XP Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution Description: A use-after-free issue exists in the handling of HTML object element fallback content. Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution. This issue is addressed through improved memory reference tracking. Credit to wushi of team509, working with TippingPoint's Zero Day Initiative for reporting this issue.'

Solution: Per: http://lists.apple.com/archives/security-announce/2010/Mar/msg00000.html 'Safari 4.0.5 is available via the Apple Software Update application, or Apple's Safari download site at: http://www.apple.com/safari/download/'

Affected software / configurations for CVE-2010-0047

Vendor Product Version Raw CPE
apple safari <= 4.0.4 cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
apple safari 4.0 cpe:2.3:a:apple:safari:4.0:*:*:*:*:*:*:*
apple safari 4.0.0b cpe:2.3:a:apple:safari:4.0.0b:*:*:*:*:*:*:*
apple safari 4.0.1 cpe:2.3:a:apple:safari:4.0.1:*:*:*:*:*:*:*
apple safari 4.0.2 cpe:2.3:a:apple:safari:4.0.2:*:*:*:*:*:*:*
apple safari 4.0.3 cpe:2.3:a:apple:safari:4.0.3:*:*:*:*:*:*:*

References for CVE-2010-0047

URL Tags
http://lists.apple.com/archives/security-announce/2010/Jun/msg00003.html
http://lists.apple.com/archives/security-announce/2010/Mar/msg00000.html Vendor Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041383.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041432.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041436.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
http://secunia.com/advisories/41856
http://secunia.com/advisories/43068
http://support.apple.com/kb/HT4070 Vendor Advisory
http://support.apple.com/kb/HT4225
http://www.mandriva.com/security/advisories?name=MDVSA-2011:039
http://www.securityfocus.com/bid/38671 Patch
http://www.securitytracker.com/id?1023708
http://www.ubuntu.com/usn/USN-1006-1
http://www.vupen.com/english/advisories/2010/2722
http://www.vupen.com/english/advisories/2011/0212
http://www.vupen.com/english/advisories/2011/0552
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6882
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