VDB-13815 · CVE-1999-0345 · SBV-3068

Microsoft Windows 95/NT 4.0 ICMP Jolt denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Microsoft Windows 95/NT 4.0. Affected is an unknown function of the component ICMP Handler. Performing a manipulation results in denial of service (Jolt). This vulnerability is known as CVE-1999-0345. Furthermore, an exploit is available. Due to its background and reception, this vulnerability has an historic impact. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Microsoft Windows 95/NT 4.0 (Operating System). This affects an unknown code of the component ICMP Handler. The manipulation with an unknown input leads to a denial of service vulnerability (Jolt). CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

jolt icmp attack causes a denial of service in windows 95 and windows nt systems.

The issue has been introduced in 08/24/1995. The weakness was published 01/01/1997. This vulnerability is uniquely identified as CVE-1999-0345. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/16/2026). Due to its background and reception, this vulnerability has a historic impact.

It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 496 days. During that time the estimated underground price was around $25k-$100k.

Upgrading to version 98 or 2000 eliminates this vulnerability.It is possible to mitigate the weakness by firewalling ICMP. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Vulnerability Center (SBV-3068†). Similar entries are available at VDB-13819, VDB-13818, VDB-13817 and VDB-13816. Be aware that VulDB is the high quality source for vulnerability data.

Affected

FreeBSD up to 2.0.5
IBM AIX up to 4.2
IBM SNG up to 2.2
SCO OpenServer 5
Sun SunOS

Productinfo

Type

Operating System

Vendor

Microsoft

Name

Windows

Version

License

commercial

Website

Vendor: https://www.microsoft.com/
Product: https://www.microsoft.com/en-us/windows

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Jolt
Class: Denial of service / Jolt
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Windows 98/2000
Firewalling: 🔍
Suricata ID: 2100268
Suricata Class: 🔍
Suricata Message: 🔍
SourceFire IPS: 🔍

Timelineinfo

08/24/1995 🔍
01/01/1997 +496 days 🔍
01/01/1997 +0 days 🔍
01/01/1997 +0 days 🔍
12/02/2003 +2526 days 🔍
06/17/2014 +3850 days 🔍
04/16/2026 +4321 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Status: Confirmed

CVE: CVE-1999-0345 (🔍)
GCVE (CVE): GCVE-0-1999-0345
GCVE (VulDB): GCVE-100-13815
Vulnerability Center: 3068 - ICMP Attack in Windows 95 and Windows NT Systems, High

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 06/18/2014 00:09
Updated: 04/16/2026 12:37
Changes: 06/18/2014 00:09 (45), 05/17/2019 12:40 (20), 04/16/2026 12:37 (18)
Complete: 🔍
Cache ID: 216::103