How severe is CVE-2020-5341?

CVE-2020-5341 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-5341 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5341?

CVE-2020-5341 primarily affects Dell Emc Avamar Server. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-5341?

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-2020-5341 published?

CVE-2020-5341 was published on 2021-07-28 and last updated on 2026-06-17.

CVE-2020-5341

CVE-2020-5341 is a critical-severity vulnerability in Dell Emc Avamar Server with a CVSS 3.x base score of 9.8. 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Dell Emc Avamar Server
Published: 2021-07-28
Last modified: 2026-06-17

Description

Deserialization of Untrusted Data Vulnerability Dell EMC Avamar Server versions 7.4.1, 7.5.0, 7.5.1, 18.2, 19.1 and 19.2 and Dell EMC Integrated Data Protection Appliance versions 2.0, 2.1, 2.2, 2.3, 2.4 and 2.4.1 contain a Deserialization of Untrusted Data Vulnerability. A remote unauthenticated attacker could exploit this vulnerability to send a serialized payload that would execute code on the system.

Frequently asked questions

What is CVE-2020-5341?: Deserialization of Untrusted Data Vulnerability Dell EMC Avamar Server versions 7.4.1, 7.5.0, 7.5.1, 18.2, 19.1 and 19.2 and Dell EMC Integrated Data Protection Appliance versions 2.0, 2.1, 2.2, 2.3, 2.4 and 2.4.1 contain a Deserialization of Untrusted Data Vulnerability. A remote unauthenticated attacker could exploit this vulnerability to send a serialized payload that would execute code on the system.
How severe is CVE-2020-5341?: CVE-2020-5341 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-5341 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5341?: CVE-2020-5341 primarily affects Dell Emc Avamar Server. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-5341?: 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-2020-5341 published?: CVE-2020-5341 was published on 2021-07-28 and last updated on 2026-06-17.

References

https://www.dell.com/support/security/en-us/details/541677/DSA-2020-057-Dell-EMC-Avamar-Server-Deserialization-of-Untrusted-Data-Vulnerability

Affected products (13)

cpe:2.3:a:dell:emc_avamar_server:7.4.1:*:*:*:*:*:*:*
cpe:2.3:a:dell:emc_avamar_server:7.5.0:*:*:*:*:*:*:*
cpe:2.3:a:dell:emc_avamar_server:7.5.1:*:*:*:*:*:*:*
cpe:2.3:a:dell:emc_avamar_server:18.1:*:*:*:*:*:*:*
cpe:2.3:a:dell:emc_avamar_server:18.2:*:*:*:*:*:*:*
cpe:2.3:a:dell:emc_avamar_server:19.1:*:*:*:*:*:*:*
cpe:2.3:a:dell:emc_avamar_server:19.2:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_integrated_data_protection_appliance_firmware:2.0:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_integrated_data_protection_appliance_firmware:2.1:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_integrated_data_protection_appliance_firmware:2.2:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_integrated_data_protection_appliance_firmware:2.3:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_integrated_data_protection_appliance_firmware:2.4:*:*:*:*:*:*:*
cpe:2.3:o:dell:emc_integrated_data_protection_appliance_firmware:2.4.1:*:*:*:*:*:*:*

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