How severe is CVE-2020-15476?

CVE-2020-15476 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-2020-15476 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15476?

CVE-2020-15476 primarily affects Ntop Ndpi. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-15476?

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-2020-15476 published?

CVE-2020-15476 was published on 2020-07-01 and last updated on 2026-06-17.

CVE-2020-15476

CVE-2020-15476 is a high-severity vulnerability in Ntop Ndpi 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-125.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Ntop Ndpi
Published: 2020-07-01
Last modified: 2026-06-17

Description

In nDPI through 3.2, the Oracle protocol dissector has a heap-based buffer over-read in ndpi_search_oracle in lib/protocols/oracle.c.

Frequently asked questions

What is CVE-2020-15476?: In nDPI through 3.2, the Oracle protocol dissector has a heap-based buffer over-read in ndpi_search_oracle in lib/protocols/oracle.c.
How severe is CVE-2020-15476?: CVE-2020-15476 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-2020-15476 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15476?: CVE-2020-15476 primarily affects Ntop Ndpi. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-15476?: 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-2020-15476 published?: CVE-2020-15476 was published on 2020-07-01 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:ntop:ndpi:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

More vulnerabilities in Ntop Ndpi

CVE-2020-15475 — Critical (CVSS 9.8): In nDPI through 3.2, ndpi_reset_packet_line_info in lib/ndpi_main.c omits certain reinitialization, leading to a…
CVE-2020-15474 — Critical (CVSS 9.8): In nDPI through 3.2, there is a stack overflow in extractRDNSequence in lib/protocols/tls.c.
CVE-2020-11939 — Critical (CVSS 9.8): In nDPI through 3.2 Stable, the SSH protocol dissector has multiple KEXINIT integer overflows that result in a…
CVE-2020-15473 — Critical (CVSS 9.1): In nDPI through 3.2, the OpenVPN dissector is vulnerable to a heap-based buffer over-read in ndpi_search_openvpn in…
CVE-2020-15472 — Critical (CVSS 9.1): In nDPI through 3.2, the H.323 dissector is vulnerable to a heap-based buffer over-read in ndpi_search_h323 in…
CVE-2020-15471 — Critical (CVSS 9.1): In nDPI through 3.2, the packet parsing code is vulnerable to a heap-based buffer over-read in…

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