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CVE-2008-2121

20
FAUCET Score

CVE-2008-2121 describes a denial-of-service vulnerability in the TCP implementation of Sun Solaris 8, 9, and 10. Remote attackers can exploit this flaw by initiating a TCP SYN flood, leading to high CPU consumption and new connection timeouts on affected systems. With a CVSS score of 7.8, this vulnerability is considered high severity due to its network-based attack vector, low attack complexity, and complete impact on availability. Despite its age and severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
5.8CPE matchmatch criteria
cpe:2.3:o:sun:sunos:5.8:*:*:*:*:*:*:*
5.9CPE matchmatch criteria
cpe:2.3:o:sun:sunos:5.9:*:*:*:*:*:*:*
5.10CPE matchmatch criteria
cpe:2.3:o:sun:sunos:5.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.64%
Probability of exploitation in next 30 days
EPSS Percentile
84.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0264 is in the 72nd percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Remediation records are not available for this CVE.

References

secunia.com / advisories/30125
secunia.com / advisories/30131
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/42264
sunsolve.sun.com / search/document.do
support.avaya.com / elmodocs2/security/ASA-2008-206.htm
securityfocus.com / bid/29089
Patch
securitytracker.com / id
vupen.com / english/advisories/2008/1453/references
vupen.com / english/advisories/2008/1585/references