How severe is CVE-2001-1046?

CVE-2001-1046 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2001-1046 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1046?

CVE-2001-1046 primarily affects Qualcomm Qpopper. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-1046?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2001-1046 published?

CVE-2001-1046 was published on 2001-06-02 and last updated on 2026-06-16.

CVE-2001-1046

CVE-2001-1046 is a critical-severity vulnerability in Qualcomm Qpopper with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Qualcomm Qpopper
Published: 2001-06-02
Last modified: 2026-06-16

Description

Buffer overflow in qpopper (aka qpop or popper) 4.0 through 4.0.2 allows remote attackers to gain privileges via a long username.

Frequently asked questions

What is CVE-2001-1046?: Buffer overflow in qpopper (aka qpop or popper) 4.0 through 4.0.2 allows remote attackers to gain privileges via a long username.
How severe is CVE-2001-1046?: CVE-2001-1046 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2001-1046 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1046?: CVE-2001-1046 primarily affects Qualcomm Qpopper. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-1046?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2001-1046 published?: CVE-2001-1046 was published on 2001-06-02 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:qualcomm:qpopper:4.0:*:*:*:*:*:*:*
cpe:2.3:a:qualcomm:qpopper:4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:qualcomm:qpopper:4.0.2:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm Qpopper

CVE-2003-0143 — Critical (CVSS 10.0): The pop_msg function in qpopper 4.0.x before 4.0.5fc2 does not null terminate a message buffer after a call to…
CVE-1999-0822 — Critical (CVSS 10.0): Buffer overflow in Qpopper (qpop) 3.0 allows remote root access via AUTH command.
CVE-1999-0006 — Critical (CVSS 9.8): Buffer overflow in POP servers based on BSD/Qualcomm's qpopper allows remote attackers to gain root access using a long…
CVE-2000-0442 — High (CVSS 7.5): Qpopper 2.53 and earlier allows local users to gain privileges via a formatting string in the From: header, which is…
CVE-2000-0096 — High (CVSS 7.2): Buffer overflow in qpopper 3.0 beta versions allows local users to gain privileges via a long LIST command.
CVE-2000-1198 — Medium (CVSS 5.5): qpopper POP server creates lock files with predictable names, which allows local users to cause a denial of service for…

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