How severe is CVE-2000-0320?

CVE-2000-0320 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2000-0320 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0320?

CVE-2000-0320 primarily affects Qualcomm Qpopper. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0320?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2000-0320 published?

CVE-2000-0320 was published on 2000-04-21 and last updated on 2026-06-16.

CVE-2000-0320

CVE-2000-0320 is a medium-severity vulnerability in Qualcomm Qpopper with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Qualcomm Qpopper
Published: 2000-04-21
Last modified: 2026-06-16

Description

Qpopper 2.53 and 3.0 does not properly identify the \n string which identifies the end of message text, which allows a remote attacker to cause a denial of service or corrupt mailboxes via a message line that is 1023 characters long and ends in \n.

Frequently asked questions

What is CVE-2000-0320?: Qpopper 2.53 and 3.0 does not properly identify the \n string which identifies the end of message text, which allows a remote attacker to cause a denial of service or corrupt mailboxes via a message line that is 1023 characters long and ends in \n.
How severe is CVE-2000-0320?: CVE-2000-0320 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2000-0320 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0320?: CVE-2000-0320 primarily affects Qualcomm Qpopper. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0320?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0320 published?: CVE-2000-0320 was published on 2000-04-21 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:qualcomm:qpopper:2.53:*:*:*:*:*:*:*
cpe:2.3:a:qualcomm:qpopper:3.0:*:*:*:*:*:*:*
cpe:2.3:h:sun:cobalt_raq_2:*:*:*:*:*:*:*:*
cpe:2.3:h:sun:cobalt_raq_3i:*:*:*:*:*:*:*:*

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-2001-1046 — Critical (CVSS 10.0): Buffer overflow in qpopper (aka qpop or popper) 4.0 through 4.0.2 allows remote attackers to gain privileges via a long…
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.

All CVEs affecting Qualcomm Qpopper →