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CVE-2009-2839

20
FAUCET Score

CVE-2009-2839 describes a memory corruption vulnerability in Apple Mac OS X 10.5.8's Screen Sharing feature, affecting both client and server versions. A remote VNC server could exploit this to execute arbitrary code or cause a denial of service. With a CVSS score of 6.8, it's a medium-severity vulnerability requiring medium attack complexity but no authentication, potentially leading to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this decade-old vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
10.5.8CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.5.8:*:*:*:*:*:*:*
10.5.8CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x_server:10.5.8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.05%
Probability of exploitation in next 30 days
EPSS Percentile
79.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0205 is in the 65th percentile among its peer group of 19,958 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (1)

applepatch availablevia nvd_reference
View patch

References

lists.apple.com / archives/security-announce/2009/Nov/msg00000.html
PatchVendor Advisory
osvdb.org / 59997
support.apple.com / kb/HT3937
PatchVendor Advisory
securityfocus.com / bid/36956
Patch
vupen.com / english/advisories/2009/3184