CVE-2008-4388

NONECVSS 0.0Weaponized
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 38%CVSS: —Exploit: NoneExposed: 0

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

The LaunchObj ActiveX control before 5.2.2.865 in launcher.dll in Symantec AppStream Client 5.2.x before 5.2.2 SP3 MP1 does not properly validate downloaded files, which allows remote attackers to execute arbitrary code via the installAppMgr method and unspecified other methods.

CVSS v3
—
EG Score
0.0(none)
EG Risk
0
EG Risk 0/100

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. It is distinct from the 0–10 EG Score, which measures severity.

EPSS
98.4%
KEV
Not listed

Published

January 20, 2009

Last Modified

April 23, 2026

References (8)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 31× 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. 2026-07-23 14:14 UTCEPSS rescore
  2. 2026-07-23 00:56 UTCEG score recompute
  3. 2026-07-23 00:35 UTCEG score recompute▼ 1.30
  4. 2026-07-23 00:01 UTCEG score recompute▲ 1.30
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  39. 2026-05-31 00:13 UTCEPSS rescore
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  41. 2026-05-30 18:42 UTCEG score recompute
  42. 2026-05-30 18:42 UTCGHSA enrichment
  43. 2026-05-29 13:40 UTCEPSS rescore
  44. 2026-05-28 13:42 UTCEPSS rescore
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  49. 2026-05-22 21:15 UTCEPSS rescore
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  51. 2026-05-20 22:37 UTCEPSS rescore
  52. 2026-05-20 22:36 UTCEPSS rescore
  53. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-16512✓ verified
    First seen Nov 24, 2010

    Symantec AppStream LaunchObj - ActiveX Control Arbitrary File Download and Execute (Metasploit)

    Open source ↗
  • Metasploitexploit/windows/browser/symantec_appstream_unsafe✓ verified
    First seen Jan 15, 2009

    Symantec AppStream LaunchObj ActiveX Control Arbitrary File Download and Execute

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2008-4388?
CVE-2008-4388 is a none vulnerability published on January 20, 2009. The LaunchObj ActiveX control before 5.2.2.865 in launcher.dll in Symantec AppStream Client 5.2.x before 5.2.2 SP3 MP1 does not properly validate downloaded files, which allows remote attackers to execute arbitrary code via the installAppMgr method and unspecified other methods.
When was CVE-2008-4388 disclosed?
CVE-2008-4388 was first published in the National Vulnerability Database on January 20, 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-2008-4388 actively exploited?
CVE-2008-4388 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2008-4388?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2008-4388, 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

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