Windows 95, Windows 98, Windows 2000, Windows NT 4.0, and Terminal Server systems allow a remote attacker to cause a denial of service by se
Windows 95, Windows 98, Windows 2000, Windows NT 4.0, and Terminal Server systems allow a remote attacker to cause a denial of service by sending a large number of identical fragmented IP packets, aka jolt2 or the "IP Fragment Reassembly" vulnerability.
- Published
- May 19, 2000
- Updated
- Jun 16, 2026
- EPSS
- 38.4% · 99th percentile
- CWE
- CWE-399
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Report tools
Action score
43
Plan
Add it to your regular patch cycle.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 12 / 30 · 38.4%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| be | beos | cpe:2.3:o:be:beos |
| microsoft | windows 2000 | cpe:2.3:o:microsoft:windows_2000 |
| microsoft | windows 95 | cpe:2.3:o:microsoft:windows_95 |
| microsoft | windows 98 | cpe:2.3:o:microsoft:windows_98 |
| microsoft | windows nt | cpe:2.3:o:microsoft:windows_nt |
| microsoft | terminal server | cpe:2.3:a:microsoft:terminal_server |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- be beos5.0
- microsoft terminal serverall versions
- microsoft windows 2000all versions
- microsoft windows 95all versions
- microsoft windows 98all versions
- microsoft windows nt4.0
Same product
be: all recordsOther highest-scoring records for the same primary product.
- CVE-2000-0279BeOS allows remote attackers to cause a denial of service via malformed packets whose length field is less than the length of the headers.22Monitor
- CVE-2000-0463BeOS 5.0 allows remote attackers to cause a denial of service via fragmented TCP packets.21Monitor
- CVE-2000-1152Browser IRC client in BeOS r5 pro and earlier allows remote attackers to conduct a denial of service via a message that contains a long URL.20Monitor
- CVE-2000-0276BeOS 4.5 and 5.0 allow local users to cause a denial of service via malformed direct system calls using interrupt 37.8Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | dos | 2000-12-02 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+197 d
- TodaySep 30, 2026+9630 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- C · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- C
Weakness class (CWE)
CWE-399 · Resource Management ErrorsCVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.securityfocus.com/bid/1236
- www.securityfocus.com/templates/advisory.html?id=2240
- docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-029
Vendor advisories and official records. Exploit/PoC links are deliberately left out.