How severe is CVE-2024-20503?

CVE-2024-20503 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-20503 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-20503?

CVE-2024-20503 primarily affects Cisco Duo Authentication For Epic. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-20503?

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

Does CVE-2024-20503 have an EU (EUVD) identifier?

Yes. CVE-2024-20503 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18218.

When was CVE-2024-20503 published?

CVE-2024-20503 was published on 2024-09-04 and last updated on 2026-06-17.

CVE-2024-20503

CVE-2024-20503 is a medium-severity vulnerability in Cisco Duo Authentication For Epic with a CVSS 3.x base score of 5.5. 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-311.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-18218
Weakness: CWE-311
Affected product: Cisco Duo Authentication For Epic
Published: 2024-09-04
Last modified: 2026-06-17

Description

A vulnerability in Cisco Duo Epic for Hyperdrive could allow an authenticated, local attacker to view sensitive information in cleartext on an affected system. This vulnerability is due to improper storage of an unencrypted registry key. A low-privileged attacker could exploit this vulnerability by viewing or querying the registry key on the affected system. A successful exploit could allow the attacker to view sensitive information in cleartext.

Frequently asked questions

What is CVE-2024-20503?: A vulnerability in Cisco Duo Epic for Hyperdrive could allow an authenticated, local attacker to view sensitive information in cleartext on an affected system. This vulnerability is due to improper storage of an unencrypted registry key. A low-privileged attacker could exploit this vulnerability by viewing or querying the registry key on the affected system. A successful exploit could allow the attacker to view sensitive information in cleartext.
How severe is CVE-2024-20503?: CVE-2024-20503 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-20503 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-20503?: CVE-2024-20503 primarily affects Cisco Duo Authentication For Epic. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-20503?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-20503 have an EU (EUVD) identifier?: Yes. CVE-2024-20503 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18218.
When was CVE-2024-20503 published?: CVE-2024-20503 was published on 2024-09-04 and last updated on 2026-06-17.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-duo-epic-info-sdLv6h8y

Affected products (6)

cpe:2.3:a:cisco:duo_authentication_for_epic:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:duo_authentication_for_epic:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:duo_authentication_for_epic:1.1.9:*:*:*:*:*:*:*
cpe:2.3:a:cisco:duo_authentication_for_epic:1.1.10:*:*:*:*:*:*:*
cpe:2.3:a:cisco:duo_authentication_for_epic:1.1.13:*:*:*:*:*:*:*
cpe:2.3:a:cisco:duo_authentication_for_epic:1.2.0.95:*:*:*:*:*:*:*

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