How severe is CVE-2010-4816?

CVE-2010-4816 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2010-4816 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-4816?

CVE-2010-4816 primarily affects Openbsd. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-4816?

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

When was CVE-2010-4816 published?

CVE-2010-4816 was published on 2021-06-22 and last updated on 2026-06-16.

CVE-2010-4816

CVE-2010-4816 is a high-severity vulnerability in Openbsd with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Openbsd
Published: 2021-06-22
Last modified: 2026-06-16

Description

It was found in FreeBSD 8.0, 6.3 and 4.9, and OpenBSD 4.6 that a null pointer dereference in ftpd/popen.c may lead to remote denial of service of the ftpd service.

Frequently asked questions

What is CVE-2010-4816?: It was found in FreeBSD 8.0, 6.3 and 4.9, and OpenBSD 4.6 that a null pointer dereference in ftpd/popen.c may lead to remote denial of service of the ftpd service.
How severe is CVE-2010-4816?: CVE-2010-4816 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2010-4816 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-4816?: CVE-2010-4816 primarily affects Openbsd. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-4816?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2010-4816 published?: CVE-2010-4816 was published on 2021-06-22 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:o:openbsd:openbsd:4.6:*:*:*:*:*:*:*
cpe:2.3:o:openbsd:openbsd:4.9:*:*:*:*:*:*:*
cpe:2.3:o:openbsd:openbsd:6.3:*:*:*:*:*:*:*
cpe:2.3:o:openbsd:openbsd:8.0:*:*:*:*:*:*:*

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