CVE-2008-4250 — Microsoft Windows Buffer Overflow Vulnerability

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

• Documented patch — secunia.com (NIST National Vulnerability Database)
• Documented patch — www.securityfocus.com (NIST National Vulnerability Database)
• Documented patch — docs.microsoft.com (NIST National Vulnerability Database)

CISA required action CISA

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

US federal deadline: Jun 3, 2026 — passed 134 day(s) ago

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

1. Identify exposed assets running the affected vendor/product/version combinations (Microsoft Windows 2000, Microsoft Windows Server 2003, Microsoft Windows Server 2008…).
2. Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
3. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
4. Apply the fixed version or the patch documented under Remediation.
5. EPSS ahead of 100% of scored CVEs: prioritize it in the patch queue.
6. Search available logs for exploit probes matching the vulnerability class (injection), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-94 · Code Injection

Other CVEs with this weakness →

CISA KEV details CISA

CISA lists a CVE once it has evidence of exploitation against real targets.

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.

Public exploits, PoCs and detection templates

Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.

Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.

EPSS over time FIRST

Oct 12, 2026 → Oct 14, 2026 · 3 reading(s) · max 98.75%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

• Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
• Look for parameters with command/query metacharacters and unexpected child processes of the service.
• Hunt retroactively in logs from before May 20, 2026 (KEV listing): exploitation may have started earlier.

Timeline

What happened to this CVE, newest first.

• 2026
• SSVC assessment updated
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• Record published
  Oct 13, 2026
• Fix documented
  Oct 13, 2026 · NIST National Vulnerability Database
• Affected products added · microsoft/windows 2000, microsoft/windows server 2003, microsoft/windows server 2008, microsoft/windows vista, microsoft
  Oct 13, 2026 · NIST National Vulnerability Database
• CVSS changed · 9.8
  Oct 13, 2026 · NIST National Vulnerability Database
• Source status changed · → Analyzed
  Oct 13, 2026 · NIST National Vulnerability Database
• Added to CISA KEV (detected)
  Oct 13, 2026 · CISA Known Exploited Vulnerabilities
• Record created in this database
  Oct 13, 2026 · CISA Known Exploited Vulnerabilities
• Added to CISA KEV catalog
  May 19, 2026 · CISA
• 2008
• CVE published
  Oct 23, 2008 · microsoft

Source activity

Repeated readings are counted rather than listed.

• 2× References added · Oct 13, 2026 – Oct 13, 2026
• 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

21 on the record

• www.vupen.com/english/advisories/2008/2902
  Vendor Advisory, vdb-entry, x_refsource_VUPEN, NIST National Vulnerability Database
• www.securityfocus.com/bid/31874
  Broken Link, Exploit, Patch, Third Party Advisory, VDB Entry, vdb-entry, x_refsource_BID, NIST National Vulnerability Database
• secunia.com/advisories/32326
  Patch, Vendor Advisory, third-party-advisory, x_refsource_SECUNIA, NIST National Vulnerability Database
• docs.microsoft.com/en-us/security-updates/securitybulletins/2008/ms08-067
  Patch, Vendor Advisory, vendor-advisory, x_refsource_MS, NIST National Vulnerability Database
• www.cisa.gov/known-exploited-vulnerabilities-catalog
  US Government Resource, NIST National Vulnerability Database
• blogs.securiteam.com/index.php/archives/1150
  Permissions Required, x_refsource_MISC, NIST National Vulnerability Database
• exchange.xforce.ibmcloud.com/vulnerabilities/46040
  Third Party Advisory, VDB Entry, vdb-entry, x_refsource_XF, NIST National Vulnerability Database
• www.securitytracker.com/id
  Broken Link, Third Party Advisory, VDB Entry, vdb-entry, x_refsource_SECTRACK, NIST National Vulnerability Database
• www.exploit-db.com/exploits/7104
  Exploit, Third Party Advisory, VDB Entry, exploit, x_refsource_EXPLOIT-DB, NIST National Vulnerability Database
• oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6093
  Broken Link, Third Party Advisory, vdb-entry, signature, x_refsource_OVAL, NIST National Vulnerability Database
• www.exploit-db.com/exploits/6841
  Exploit, Third Party Advisory, VDB Entry, exploit, x_refsource_EXPLOIT-DB, NIST National Vulnerability Database
• www.exploit-db.com/exploits/6824
  Exploit, Third Party Advisory, VDB Entry, exploit, x_refsource_EXPLOIT-DB, NIST National Vulnerability Database
• github.com/advisories/GHSA-3v68-r58v-m4c2
  GitHub Security Advisories
• nvd.nist.gov/vuln/detail/CVE-2008-4250
  GitHub Security Advisories
• www.securityfocus.com/archive/1/497808/100/0/threaded
  Broken Link, Third Party Advisory, VDB Entry, mailing-list, x_refsource_BUGTRAQ, NIST National Vulnerability Database
• www.kb.cert.org/vuls/id/827267
  Third Party Advisory, US Government Resource, third-party-advisory, x_refsource_CERT-VN, NIST National Vulnerability Database
• www.exploit-db.com/exploits/7132
  Exploit, Third Party Advisory, VDB Entry, exploit, x_refsource_EXPLOIT-DB, NIST National Vulnerability Database
• www.us-cert.gov/cas/techalerts/TA08-297A.html
  Broken Link, Third Party Advisory, US Government Resource, third-party-advisory, x_refsource_CERT, NIST National Vulnerability Database
• www.securityfocus.com/archive/1/497816/100/0/threaded
  Broken Link, Third Party Advisory, VDB Entry, mailing-list, x_refsource_BUGTRAQ, NIST National Vulnerability Database
• marc.info/
  Issue Tracking, Mailing List, Third Party Advisory, vendor-advisory, x_refsource_HP, NIST National Vulnerability Database
• www.us-cert.gov/cas/techalerts/TA09-088A.html
  Third Party Advisory, US Government Resource, third-party-advisory, x_refsource_CERT, NIST National Vulnerability Database

Elsewhere on this site

Related CVEs (same products)

• High CVE-2026-20940 Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability Jan 13, 2026
• High CVE-2026-20931 Windows Telephony Service Elevation of Privilege Vulnerability Jan 13, 2026
• Medium CVE-2026-20936 Windows NDIS Information Disclosure Vulnerability Jan 13, 2026
• High CVE-2026-20929 Windows HTTP.sys Elevation of Privilege Vulnerability Jan 13, 2026
• Medium CVE-2026-20925 NTLM Hash Disclosure Spoofing Vulnerability Jan 13, 2026
• Medium CVE-2026-20927 Windows SMB Server Denial of Service Vulnerability Jan 13, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

• No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
• No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
• No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2008-4250 is "Microsoft Windows Buffer Overflow Vulnerability", rated Critical. It affects Windows 2000 (Microsoft); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 9.8 describes technical severity. EPSS 98.75% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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