CVE-2008-5180

HIGHNVD 5.37.9▲
EchelonGraph scoreHIGH confidence

Score elevated to 7.9 because EPSS predicts 68% probability of exploitation within the next 30 days (99th percentile of EPSS-scored CVEs). NVD baseline CVSS 5.3 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction (continuous uplift above 30%)
Sources: epss, ghsa, nvd
Weaponized
7.9EG
EchelonGraph verdictMitigate this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 68%
  • Public exploit code is available (Exploit-DB (verified), ssvc poc, epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 68%CVSS: 5.3Exploit: Exploit-DB (verified) · ssvc poc · epss top5pct · epss high · public exploitExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

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.

CVSS v3
5.3
EG Score
7.9HIGHhigh confidence
EG Risk
78
EG Risk 78/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity79% × 45%
Exploitation68% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
68%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

November 20, 2008

Last Modified

April 23, 2026

Advisory Details (7)

Auto-updated May 30, 2026
🔬 Proof of concept available. No fix on record yet.
generic🟡 PoC Available

Microsoft Office 2010 Beta - Communicator SIP Denial of Service - Windows dos Exploit

http://www.exploit-db.com/exploits/12079
generic

About Secunia Research | Flexera

http://secunia.com/advisories/32940
generic🟡 PoC Available

Microsoft Office - Communicator 'SIP' Remote Denial of Service - Windows dos Exploit

https://www.exploit-db.com/exploits/7262
generic

IBM X-Force Exchange

https://exchange.xforce.ibmcloud.com/vulnerabilities/57581
generic

IBM X-Force Exchange

https://exchange.xforce.ibmcloud.com/vulnerabilities/46673
generic
http://www.securitytracker.com/id?1021294
generic
http://www.securityfocus.com/bid/39221

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 3× in last 7d / 12× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-09 20:00 UTCEPSS rescore
  2. 2026-10-07 23:37 UTCEPSS rescore
  3. 2026-10-03 14:20 UTCEPSS rescore
  4. 2026-10-01 19:42 UTCEPSS rescore
  5. 2026-09-29 07:53 UTCEG score recompute
  6. 2026-09-26 15:52 UTCEPSS rescore
  7. 2026-09-18 19:20 UTCEPSS rescore
  8. 2026-09-17 19:20 UTCEPSS rescore
  9. 2026-09-15 03:04 UTCEPSS rescore
  10. 2026-09-13 16:40 UTCEPSS rescore
  11. 2026-09-12 14:54 UTCEPSS rescore
  12. 2026-09-10 09:24 UTCEPSS rescore
  13. 2026-09-06 13:41 UTCEPSS rescore
  14. 2026-09-05 15:22 UTCEPSS rescore
  15. 2026-09-04 04:59 UTCEPSS rescore
  16. 2026-08-30 01:14 UTCEPSS rescore
  17. 2026-08-28 21:34 UTCEPSS rescore
  18. 2026-08-15 01:24 UTCEPSS rescore
  19. 2026-08-07 16:21 UTCEPSS rescore
  20. 2026-08-06 13:41 UTCEPSS rescore
  21. 2026-07-30 01:25 UTCEPSS rescore
  22. 2026-07-25 14:12 UTCEPSS rescore
  23. 2026-07-24 14:12 UTCEPSS rescore
  24. 2026-07-23 00:57 UTCEG score recompute
  25. 2026-07-23 00:35 UTCEG score recompute
Show 70 more
  1. 2026-07-23 00:02 UTCEG score recompute▲ 2.60
  2. 2026-07-22 21:41 UTCEG score recompute
  3. 2026-07-20 17:03 UTCEPSS rescore
  4. 2026-07-16 16:58 UTCEPSS rescore
  5. 2026-07-15 16:54 UTCEPSS rescore
  6. 2026-07-15 16:54 UTCEPSS rescore
  7. 2026-07-13 22:25 UTCEPSS rescore
  8. 2026-07-13 06:07 UTCEPSS rescore
  9. 2026-07-11 08:22 UTCEPSS rescore
  10. 2026-07-11 08:22 UTCEPSS rescore
  11. 2026-07-09 19:04 UTCEPSS rescore
  12. 2026-07-06 16:23 UTCEPSS rescore
  13. 2026-07-01 15:02 UTCEPSS rescore
  14. 2026-07-01 15:02 UTCEPSS rescore
  15. 2026-06-28 04:52 UTCEPSS rescore
  16. 2026-06-27 03:04 UTCEPSS rescore
  17. 2026-06-25 13:46 UTCEPSS rescore
  18. 2026-06-25 13:46 UTCEPSS rescore
  19. 2026-06-24 14:02 UTCEPSS rescore
  20. 2026-06-24 14:02 UTCEPSS rescore
  21. 2026-06-23 21:29 UTCEPSS rescore
  22. 2026-06-23 21:29 UTCEPSS rescore
  23. 2026-06-21 01:56 UTCEPSS rescore
  24. 2026-06-21 01:56 UTCEPSS rescore
  25. 2026-06-19 19:22 UTCEPSS rescore
  26. 2026-06-19 19:22 UTCEPSS rescore
  27. 2026-06-17 17:49 UTCEPSS rescore
  28. 2026-06-17 17:49 UTCEPSS rescore
  29. 2026-06-16 17:49 UTCEPSS rescore
  30. 2026-06-16 17:49 UTCEPSS rescore
  31. 2026-06-15 17:44 UTCEPSS rescore
  32. 2026-06-14 23:13 UTCEPSS rescore
  33. 2026-06-13 22:57 UTCEPSS rescore
  34. 2026-06-12 23:08 UTCEPSS rescore
  35. 2026-06-12 23:08 UTCEPSS rescore
  36. 2026-06-11 13:56 UTCEPSS rescore
  37. 2026-06-10 22:14 UTCEPSS rescore
  38. 2026-06-10 13:17 UTCEPSS rescore
  39. 2026-06-07 15:22 UTCEPSS rescore
  40. 2026-06-06 13:44 UTCEPSS rescore
  41. 2026-06-06 13:44 UTCEPSS rescore
  42. 2026-06-05 22:44 UTCEPSS rescore
  43. 2026-06-05 22:44 UTCEPSS rescore
  44. 2026-06-05 06:07 UTCEPSS rescore
  45. 2026-06-02 20:10 UTCEPSS rescore
  46. 2026-06-02 20:10 UTCEPSS rescore
  47. 2026-06-01 13:49 UTCEPSS rescore
  48. 2026-06-01 13:49 UTCEPSS rescore
  49. 2026-06-01 13:49 UTCEPSS rescore
  50. 2026-05-31 22:28 UTCEPSS rescore
  51. 2026-05-31 22:28 UTCEPSS rescore
  52. 2026-05-31 00:13 UTCEPSS rescore
  53. 2026-05-31 00:13 UTCEPSS rescore
  54. 2026-05-30 19:25 UTCEG score recompute
  55. 2026-05-30 19:25 UTCGHSA enrichment
  56. 2026-05-29 13:40 UTCEPSS rescore
  57. 2026-05-28 13:42 UTCEPSS rescore
  58. 2026-05-28 13:42 UTCEPSS rescore
  59. 2026-05-28 13:42 UTCEPSS rescore
  60. 2026-05-27 13:38 UTCEPSS rescore
  61. 2026-05-27 13:37 UTCEPSS rescore
  62. 2026-05-26 13:41 UTCEPSS rescore
  63. 2026-05-26 13:41 UTCEPSS rescore
  64. 2026-05-26 07:16 UTCEPSS rescore
  65. 2026-05-26 07:16 UTCEPSS rescore
  66. 2026-05-22 21:15 UTCEPSS rescore
  67. 2026-05-22 21:15 UTCEPSS rescore
  68. 2026-05-20 22:37 UTCEPSS rescore
  69. 2026-05-20 22:36 UTCEPSS rescore
  70. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-7262✓ verified
    First seen Nov 28, 2008

    Microsoft Office - Communicator 'SIP' Remote Denial of Service

    Open source ↗
  • Exploit-DBEDB-12079
    First seen Apr 6, 2010

    Microsoft Office 2010 Beta - Communicator SIP Denial of Service

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2008-5180?
CVE-2008-5180 is a high vulnerability published on November 20, 2008. 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.
When was CVE-2008-5180 disclosed?
CVE-2008-5180 was first published on November 20, 2008, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2008-5180 actively exploited?
CVE-2008-5180 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 68% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2008-5180?
CVE-2008-5180 has a CVSS v3 base score of 5.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.9 (HIGH).
How do I remediate CVE-2008-5180?
No fix for CVE-2008-5180 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2008-5180

Explore →

Is Your Infrastructure Affected by CVE-2008-5180?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs