How severe is CVE-2020-29321?

CVE-2020-29321 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 high, integrity none, and availability none.

Is CVE-2020-29321 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-29321?

CVE-2020-29321 affects Dlink Dir-868l Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-29321?

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-2020-29321 published?

CVE-2020-29321 was published on 2021-06-04 and last updated on 2026-06-17.

CVE-2020-29321

CVE-2020-29321 is a high-severity vulnerability in Dlink Dir-868l Firmware 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-522.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-522
Affected product: Dlink Dir-868l Firmware
Published: 2021-06-04
Last modified: 2026-06-17

Description

The D-Link router DIR-868L 3.01 is vulnerable to credentials disclosure in telnet service through decompilation of firmware, that allows an unauthenticated attacker to gain access to the firmware and to extract sensitive data.

Frequently asked questions

What is CVE-2020-29321?: The D-Link router DIR-868L 3.01 is vulnerable to credentials disclosure in telnet service through decompilation of firmware, that allows an unauthenticated attacker to gain access to the firmware and to extract sensitive data.
How severe is CVE-2020-29321?: CVE-2020-29321 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 high, integrity none, and availability none.
Is CVE-2020-29321 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-29321?: CVE-2020-29321 affects Dlink Dir-868l Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-29321?: 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-2020-29321 published?: CVE-2020-29321 was published on 2021-06-04 and last updated on 2026-06-17.

References

https://cybersecurityworks.com/zerodays/cve-2020-29321-telnet-hardcoded-credentials.html

Affected products (1)

cpe:2.3:o:dlink:dir-868l_firmware:3.01:*:*:*:*:*:*:*

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