CVE-2009-0077

NONECVSS 0.09.0▲
EchelonGraph scoreLOW confidence

Score elevated to 9.0 because EPSS predicts 89% probability of exploitation within the next 30 days (top 0.5% of all CVEs). Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss
Elevated
0.0
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 78%
CISA-KEV: Not listedEPSS: 78%CVSS: —Exploit: NoneExposed: 0

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

The firewall engine in Microsoft Forefront Threat Management Gateway, Medium Business Edition (TMG MBE); and Internet Security and Acceleration (ISA) Server 2004 SP3, 2006, 2006 Supportability Update, and 2006 SP1; does not properly manage the session state of web listeners, which allows remote attackers to cause a denial of service (many stale sessions) via crafted packets, aka "Web Proxy TCP State Limited Denial of Service Vulnerability."

CVSS v3
—
EG Score
9.0(low)
EPSS
99.5%
KEV
Not listed

Published

April 15, 2009

Last Modified

April 23, 2026

References (14)

Data Freshness Timeline

(refreshed 3× in last 7d / 20× 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. 2026-07-06 02:19 UTCEPSS rescore
  2. 2026-07-06 02:19 UTCEPSS rescore
  3. 2026-07-01 15:02 UTCEPSS rescore
  4. 2026-06-27 03:05 UTCEPSS rescore
  5. 2026-06-25 13:46 UTCEPSS rescore
  6. 2026-06-25 13:46 UTCEPSS rescore
  7. 2026-06-24 14:02 UTCEPSS rescore
  8. 2026-06-24 14:02 UTCEPSS rescore
  9. 2026-06-23 21:29 UTCEPSS rescore
  10. 2026-06-23 21:29 UTCEPSS rescore
  11. 2026-06-19 19:22 UTCEPSS rescore
  12. 2026-06-19 19:22 UTCEPSS rescore
  13. 2026-06-17 17:49 UTCEPSS rescore
  14. 2026-06-17 17:49 UTCEPSS rescore
  15. 2026-06-15 17:44 UTCEPSS rescore
  16. 2026-06-13 22:57 UTCEPSS rescore
  17. 2026-06-12 23:08 UTCEPSS rescore
  18. 2026-06-12 23:08 UTCEPSS rescore
  19. 2026-06-10 22:14 UTCEPSS rescore
  20. 2026-06-10 13:17 UTCEPSS rescore
  21. 2026-06-06 13:44 UTCEPSS rescore
  22. 2026-06-06 13:44 UTCEPSS rescore
  23. 2026-06-06 13:44 UTCEPSS rescore
  24. 2026-06-04 13:09 UTCEPSS rescore
  25. 2026-06-04 13:09 UTCEPSS rescore
Show 19 more
  1. 2026-06-01 13:49 UTCEPSS rescore
  2. 2026-06-01 13:49 UTCEPSS rescore
  3. 2026-05-31 00:13 UTCEPSS rescore
  4. 2026-05-31 00:13 UTCEPSS rescore
  5. 2026-05-30 17:15 UTCEG score recompute
  6. 2026-05-30 17:15 UTCGHSA enrichment
  7. 2026-05-29 13:40 UTCEPSS rescore
  8. 2026-05-28 13:42 UTCEPSS rescore
  9. 2026-05-28 13:42 UTCEPSS rescore
  10. 2026-05-28 13:42 UTCEPSS rescore
  11. 2026-05-26 13:41 UTCEPSS rescore
  12. 2026-05-26 13:41 UTCEPSS rescore
  13. 2026-05-22 21:15 UTCEPSS rescore
  14. 2026-05-22 21:15 UTCEPSS rescore
  15. 2026-05-20 22:37 UTCEPSS rescore
  16. 2026-05-20 22:37 UTCEPSS rescore
  17. 2026-05-20 11:21 UTCEPSS rescore
  18. 2026-05-20 11:20 UTCEPSS rescore
  19. 2026-05-18 21:29 UTCEPSS rescore

Frequently asked(4)

What is CVE-2009-0077?
CVE-2009-0077 is a none vulnerability published on April 15, 2009. The firewall engine in Microsoft Forefront Threat Management Gateway, Medium Business Edition (TMG MBE); and Internet Security and Acceleration (ISA) Server 2004 SP3, 2006, 2006 Supportability Update, and 2006 SP1; does not properly manage the session state of web listeners, which allows remote…
When was CVE-2009-0077 disclosed?
CVE-2009-0077 was first published in the National Vulnerability Database on April 15, 2009, 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-2009-0077 actively exploited?
CVE-2009-0077 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2009-0077?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-0077, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2009-0077

Explore →

Is Your Infrastructure Affected by CVE-2009-0077?

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

Start Free Scan →Browse All CVEs