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CVE-2009-1687

33
FAUCET Score

CVE-2009-1687 is a critical vulnerability affecting WebKit's JavaScript garbage collector in Apple Safari and iPhone OS versions prior to 4.0 and 2.2.1 respectively. It allows remote attackers to execute arbitrary code or cause a denial of service through memory corruption by exploiting improper handling of allocation failures via a crafted HTML document. With a CVSS score of 9.3, this vulnerability is highly severe, requiring medium attack complexity but offering complete confidentiality, integrity, and availability impacts. While no active exploitation, public exploit code, or significant community discussion has been observed, its high FAUCET Risk Score of 85/100 indicates its potential danger.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.0_betaCPE matchmatch criteria
cpe:2.3:a:apple:safari:*:*:mac:*:*:*:*:*
0.8CPE matchmatch criteria
cpe:2.3:a:apple:safari:0.8:*:mac:*:*:*:*:*
0.9CPE matchmatch criteria
cpe:2.3:a:apple:safari:0.9:*:mac:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:apple:safari:1.0:*:mac:*:*:*:*:*
1.0.3CPE matchmatch criteria
cpe:2.3:a:apple:safari:1.0.3:*:mac:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
8.11%
Probability of exploitation in next 30 days
EPSS Percentile
94.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0811 is in the 73rd percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kdelibs-6:3.3.1-14.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kdelibs-6:3.5.4-22.el5_3
View patch
applevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2009-1687Critical

kdelibs: Integer overflow in KJS JavaScript garbage collector

Jun 25, 2009

References

lists.apple.com / archives/security-announce/2009/jun/msg00002.html
Vendor Advisory
lists.apple.com / archives/security-announce/2009/Jun/msg00005.html
lists.opensuse.org / opensuse-security-announce/2011-01/msg00006.html
osvdb.org / 54985
secunia.com / advisories/35379
Vendor Advisory
secunia.com / advisories/36057
secunia.com / advisories/36062
secunia.com / advisories/36790
secunia.com / advisories/37746
secunia.com / advisories/43068
securitytracker.com / id
Patch
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10260
support.apple.com / kb/HT3613
Vendor Advisory
support.apple.com / kb/HT3639
redhat.com / archives/fedora-package-announce/2009-July/msg01177.html
redhat.com / archives/fedora-package-announce/2009-July/msg01196.html
redhat.com / archives/fedora-package-announce/2009-July/msg01199.html
redhat.com / archives/fedora-package-announce/2009-July/msg01200.html
debian.org / security/2009/dsa-1950
mandriva.com / security/advisories
securityfocus.com / bid/35260
Exploit
securityfocus.com / bid/35309
ubuntu.com / usn/USN-822-1
ubuntu.com / usn/USN-836-1
ubuntu.com / usn/USN-857-1
vupen.com / english/advisories/2009/1522
PatchVendor Advisory
vupen.com / english/advisories/2009/1621
vupen.com / english/advisories/2011/0212