CVE-2008-5180

Exp

Microsoft Communicator, and Communicator in Microsoft Office 2010 beta, allows remote attackers to cause a denial of service (memory consumption) via a large number of SIP INVITE requests, which trigger the creation of many sessions.

Published: 2008-11-20 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-5180 is rated High Exploit Risk (65.9/100): CVSS Medium severity, with high exploitation likelihood (EPSS 67.98%, 99th percentile). 4 public exploit reference(s) are indexed (Exploit-DB). 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-2008-5180

EDB-ID Source Kind Published Link
12079 exploit_db edb 2010-04-06 Exploit-DB ↗
7262 exploit_db edb 2008-11-28 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2008-5180

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 2026-06-15 76.73% 67.98% -8.76%
2 2026-03-18 82.34% 76.73% -5.60%
3 2025-11-23 — 82.34% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-5180

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L 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:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 134c704f-9b21-4f2e-91b3-4a467353bcc0
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2008-5180

Affected software / configurations for CVE-2008-5180

Vendor Product Version Raw CPE
microsoft office_communicator — cpe:2.3:a:microsoft:office_communicator:*:*:*:*:*:*:*:*

References for CVE-2008-5180

URL Tags
http://secunia.com/advisories/32940 Broken Link
http://www.exploit-db.com/exploits/12079 Exploit Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/39221 Broken Link Third Party Advisory VDB Entry
http://www.securitytracker.com/id?1021294 Broken Link Third Party Advisory VDB Entry
http://www.voipshield.com/research-details.php?id=133 Broken Link
https://exchange.xforce.ibmcloud.com/vulnerabilities/46673 Third Party Advisory VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/57581 Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/7262 Exploit Third Party Advisory VDB Entry
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