Microsoft Exchange 5.0/5.5 Access Control List config

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Exchange 5.0/5.5. It has been declared as critical. This affects an unknown function of the component Access Control List Handler. Such manipulation leads to config. This vulnerability is documented as CVE-1999-0993. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Microsoft Exchange 5.0/5.5 (Groupware Software). It has been rated as critical. Affected by this issue is some unknown processing of the component Access Control List Handler. The manipulation with an unknown input leads to a config vulnerability. Using CWE to declare the problem leads to CWE-16. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Modifications to ACLs (Access Control Lists) in Microsoft Exchange 5.5 do not take effect until the directory store cache is refreshed.

The weakness was released 12/13/1999. This vulnerability is handled as CVE-1999-0993. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.004.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Config
CWE: CWE-16
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/13/1999 🔍
12/13/1999 +0 days 🔍
06/22/2014 +5305 days 🔍
04/19/2026 +4319 days 🔍

Sourcesinfo

Vendor: microsoft.com

Status: Confirmed

CVE: CVE-1999-0993 (🔍)
GCVE (CVE): GCVE-0-1999-0993
GCVE (VulDB): GCVE-100-15056

Entryinfo

Created: 06/22/2014 15:54
Updated: 04/19/2026 23:25
Changes: 06/22/2014 15:54 (36), 05/22/2018 09:19 (10), 04/19/2026 23:25 (19)
Complete: 🔍
Cache ID: 216::103

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