VDB-14337 · CVE-1999-0529 · GCVE-0-1999-0529

Firewall Private Address privileges management

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.
7.1	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Firewall. This issue affects some unknown processing of the component Private Address Handler. Performing a manipulation with the input 10.x.x.x/127.x.x.x/217.x.x.x results in privileges management. This vulnerability is reported as CVE-1999-0529. Moreover, an exploit is present. This vulnerability has a historic impact because of its background and how it was received. It is advisable to modify the configuration settings.

Detailsinfo

A vulnerability classified as critical has been found in Firewall (Firewall Software) (affected version unknown). This affects an unknown functionality of the component Private Address Handler. The manipulation with the input value 10.x.x.x/127.x.x.x/217.x.x.x leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A router or firewall forwards packets that claim to come from IANA reserved or private addresses, e.g. 10.x.x.x, 127.x.x.x, 217.x.x.x, etc.

The weakness was disclosed 01/01/1999. This vulnerability is uniquely identified as CVE-1999-0529. 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 and a private exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/17/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue. Due to its background and reception, this vulnerability has a historic impact.

It is declared as highly functional.

It is possible to mitigate the problem by applying the configuration setting .It is possible to mitigate the weakness by firewalling All Ports. The best possible mitigation is suggested to be the change of configuration settings.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Firewall Software

Name

Firewall

CPE 2.3info

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CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.3
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
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: Config
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

01/01/1999 🔍
01/01/1999 +0 days 🔍
06/19/2014 +5648 days 🔍
04/17/2026 +4320 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-1999-0529 (🔍)
GCVE (CVE): GCVE-0-1999-0529
GCVE (VulDB): GCVE-100-14337
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/20/2014 00:44
Updated: 04/17/2026 22:15
Changes: 06/20/2014 00:44 (38), 04/04/2019 00:20 (10), 04/17/2026 22:15 (16)
Complete: 🔍
Cache ID: 216::103