Qualcomm Qpopper 2.4 POP Server PASS memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.7$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Qualcomm Qpopper 2.4. This impacts an unknown function of the component POP Server. The manipulation of the argument PASS leads to memory corruption. This vulnerability is uniquely identified as CVE-1999-0006. The attack is possible to be carried out remotely. Moreover, an exploit is present. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Qualcomm Qpopper 2.4. This issue affects some unknown functionality of the component POP Server. The manipulation of the argument PASS with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in POP servers based on BSD/Qualcomm's qpopper allows remote attackers to gain root access using a long PASS command.

The weakness was disclosed 07/14/1998 as not defined posting (Bugtraq). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-1999-0006. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/17/2026).

The exploit is available at exploit-db.com. It is declared as highly functional. The vulnerability scanner Nessus provides a plugin with the ID 10196 (Qpopper PASS Command Remote Overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc.. The commercial vulnerability scanner Qualys is able to test this issue with plugin 50001 (Qualcomm Qpopper POP3 Mail Service Buffer Overflow Vulnerability).

Upgrading eliminates this vulnerability.Addressing this vulnerability is possible by firewalling tcp/110 (pop3). The best possible mitigation is suggested to be upgrading to the latest version. Attack attempts may be identified with Snort ID 286.

The vulnerability is also documented in the databases at X-Force (1890), Exploit-DB (19109), Tenable (10196), SecurityFocus (BID 133†) and Vulnerability Center (SBV-187†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.7

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector: 🔍

ADP CISA Base Score: 9.8
ADP CISA Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 10196
Nessus Name: Qpopper PASS Command Remote Overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Snort ID: 286
Snort Message: PROTOCOL-POP EXPLOIT x86 BSD overflow
Snort Class: 🔍

Suricata ID: 2100286
Suricata Class: 🔍
Suricata Message: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍

SourceFire IPS: 🔍
ISS Proventia IPS: 🔍

Timelineinfo

06/27/1998 🔍
07/14/1998 +17 days 🔍
07/14/1998 +0 days 🔍
07/14/1998 +0 days 🔍
06/22/1999 +343 days 🔍
10/22/2002 +1218 days 🔍
06/19/2014 +4258 days 🔍
04/17/2026 +4320 days 🔍

Sourcesinfo

Vendor: qualcomm.com

Advisory: securityfocus.com⛔
Status: Confirmed

CVE: CVE-1999-0006 (🔍)
GCVE (CVE): GCVE-0-1999-0006
GCVE (VulDB): GCVE-100-14177
X-Force: 1890
SecurityFocus: 133
Vulnerability Center: 187 - Buffer Overflow in BSD Qpopper Based POP Servers, High

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

Entryinfo

Created: 06/19/2014 16:38
Updated: 04/17/2026 14:02
Changes: 06/19/2014 16:38 (72), 01/21/2019 09:57 (2), 06/23/2021 07:50 (3), 06/23/2021 07:57 (1), 08/01/2024 22:23 (25), 11/26/2024 00:08 (6), 10/29/2025 03:20 (2), 04/17/2026 14:02 (11)
Complete: 🔍
Cache ID: 216::103

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

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