CVE-2010-0050

Exp

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 an HTML document with improperly nested tags.

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-2010-0050 is rated High Exploit Risk (85.6/100): CVSS High severity, with high exploitation likelihood (EPSS 46.37%, 98th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.25% over the last day, indicating growing attacker interest. 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-2010-0050

EDB-ID Source Kind Published Link
12425 exploit_db edb 2010-04-27 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2010-0050

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 2026-02-28 45.13% 46.37% +1.25%
2 2025-06-18 51.65% 45.13% -6.52%
3 2025-04-05 — 51.65% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2010-0050

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 [email protected]
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-2010-0050

OS Trackers for CVE-2010-0050

vendor priority summary link
redhat critical — https://access.redhat.com/security/cve/CVE-2010-0050
ubuntu low CVE-2010-0050 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-2010-0050

NVD evaluator notes for CVE-2010-0050

Comment: Per: http://lists.apple.com/archives/security-announce/2010/Mar/msg00000.html 'WebKit CVE-ID: CVE-2010-0050 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 WebKit's handling of incorrectly nested HTML tags. 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&Z 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-2010-0050

Vendor Product Version Raw CPE
apple safari < 4.0.5 cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
apple iphone_os >= 2.0, < 4.0 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
fedoraproject fedora 11 cpe:2.3:o:fedoraproject:fedora:11:*:*:*:*:*:*:*
fedoraproject fedora 12 cpe:2.3:o:fedoraproject:fedora:12:*:*:*:*:*:*:*
fedoraproject fedora 13 cpe:2.3:o:fedoraproject:fedora:13:*:*:*:*:*:*:*
canonical ubuntu_linux 9.10 cpe:2.3:o:canonical:ubuntu_linux:9.10:*:*:*:*:*:*:*
canonical ubuntu_linux 10.04 cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*
canonical ubuntu_linux 10.10 cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*
opensuse opensuse 11.2 cpe:2.3:o:opensuse:opensuse:11.2:*:*:*:*:*:*:*
opensuse opensuse 11.3 cpe:2.3:o:opensuse:opensuse:11.3:*:*:*:*:*:*:*

References for CVE-2010-0050

URL Tags
http://lists.apple.com/archives/security-announce/2010/Jun/msg00003.html Mailing List
http://lists.apple.com/archives/security-announce/2010/Mar/msg00000.html Mailing List Vendor Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041383.html Mailing List
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041432.html Mailing List
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041436.html Mailing List
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html Mailing List
http://secunia.com/advisories/41856 Broken Link
http://secunia.com/advisories/43068 Broken Link
http://support.apple.com/kb/HT4070 Vendor Advisory
http://support.apple.com/kb/HT4225 Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2011:039 Broken Link
http://www.securityfocus.com/bid/38671 Broken Link Patch Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1023708 Broken Link Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-1006-1 Third Party Advisory
http://www.vupen.com/english/advisories/2010/2722 Broken Link
http://www.vupen.com/english/advisories/2011/0212 Broken Link
http://www.vupen.com/english/advisories/2011/0552 Broken Link
https://exchange.xforce.ibmcloud.com/vulnerabilities/56836 Third Party Advisory VDB Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7587 Broken Link
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