How severe is CVE-2009-3878?

CVE-2009-3878 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2009-3878 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3878?

CVE-2009-3878 affects Sun Java System Web Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-3878?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2009-3878 published?

CVE-2009-3878 was published on 2009-11-05 and last updated on 2026-06-16.

CVE-2009-3878

CVE-2009-3878 is a critical-severity vulnerability in Sun Java System Web Server with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Sun Java System Web Server
Published: 2009-11-05
Last modified: 2026-06-16

Description

Buffer overflow in Sun Java System Web Server 7.0 Update 6 has unspecified impact and remote attack vectors, as demonstrated by the vd_sjws module in VulnDisco Pack Professional 8.12. NOTE: as of 20091105, this disclosure has no actionable information. However, because the VulnDisco Pack author is a reliable researcher, the issue is being assigned a CVE identifier for tracking purposes.

Frequently asked questions

What is CVE-2009-3878?: Buffer overflow in Sun Java System Web Server 7.0 Update 6 has unspecified impact and remote attack vectors, as demonstrated by the vd_sjws module in VulnDisco Pack Professional 8.12. NOTE: as of 20091105, this disclosure has no actionable information. However, because the VulnDisco Pack author is a reliable researcher, the issue is being assigned a CVE identifier for tracking purposes.
How severe is CVE-2009-3878?: CVE-2009-3878 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2009-3878 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3878?: CVE-2009-3878 affects Sun Java System Web Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-3878?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2009-3878 published?: CVE-2009-3878 was published on 2009-11-05 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:sun:java_system_web_server:7.0:update_6:*:*:*:*:*:*

More vulnerabilities in Sun Java System Web Server

CVE-2010-0361 — Critical (CVSS 10.0): Stack-based buffer overflow in the WebDAV implementation in webservd in Sun Java System Web Server (aka SJWS) 7.0…
CVE-2010-0360 — Critical (CVSS 10.0): Sun Java System Web Server (aka SJWS) 7.0 Update 7 allows remote attackers to overwrite memory locations in the heap,…
CVE-2000-0812 — Critical (CVSS 10.0): The administration module in Sun Java web server allows remote attackers to execute arbitrary commands by uploading…
CVE-2007-3715 — Critical (CVSS 9.3): Sun Java System Application Server and Web Server 7.0 through 9.0 before 20070710 do not properly process XSLT…
CVE-2010-0388 — High (CVSS 7.5): Format string vulnerability in the WebDAV implementation in webservd in Sun Java System Web Server 7.0 Update 6 allows…
CVE-2010-0387 — High (CVSS 7.5): Multiple heap-based buffer overflows in (1) webservd and (2) the admin server in Sun Java System Web Server 7.0 Update…

All CVEs affecting Sun Java System Web Server →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →