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CVE-2008-4543

19
FAUCET Score

CVE-2008-4543 describes a denial-of-service vulnerability affecting Cisco Unity versions 4.x, 5.x, and 7.x when configured for anonymous authentication. Remote attackers can exploit this by initiating a large number of connections, leading to session exhaustion and rendering the service unavailable. With a CVSS score of 7.1, this vulnerability is considered high severity, requiring no authentication and moderate attack complexity to achieve a complete denial of service. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.2\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:unity:*:*:*:*:*:*:*:*
<= 5.0\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:unity:*:*:*:*:*:*:*:*
<= 7.0\(2\)CPE matchmatch criteria
cpe:2.3:a:cisco:unity:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:cisco:unity:4.0:*:*:*:*:*:*:*
4.0\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:unity:4.0\(1\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.1HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.83%
Probability of exploitation in next 30 days
EPSS Percentile
76.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0183 is in the 34th percentile among its peer group of 8,914 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.1 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/32187
Vendor Advisory
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/45743
cisco.com / en/US/products/products_security_response09186a0080a0d861.html
Vendor Advisory
securityfocus.com / bid/31642
voipshield.com / research-details.php
vupen.com / english/advisories/2008/2771