How severe is CVE-2020-1759?

CVE-2020-1759 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-1759 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-1759?

CVE-2020-1759 primarily affects Redhat Ceph Storage. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-1759?

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

When was CVE-2020-1759 published?

CVE-2020-1759 was published on 2020-04-13 and last updated on 2026-06-17.

CVE-2020-1759

CVE-2020-1759 is a medium-severity vulnerability in Redhat Ceph Storage with a CVSS 3.x base score of 6.4. 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-323.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
CVSS v2: 5.8
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-323
Affected product: Redhat Ceph Storage
Published: 2020-04-13
Last modified: 2026-06-17

Description

A vulnerability was found in Red Hat Ceph Storage 4 and Red Hat Openshift Container Storage 4.2 where, A nonce reuse vulnerability was discovered in the secure mode of the messenger v2 protocol, which can allow an attacker to forge auth tags and potentially manipulate the data by leveraging the reuse of a nonce in a session. Messages encrypted using a reused nonce value are susceptible to serious confidentiality and integrity attacks.

Frequently asked questions

What is CVE-2020-1759?: A vulnerability was found in Red Hat Ceph Storage 4 and Red Hat Openshift Container Storage 4.2 where, A nonce reuse vulnerability was discovered in the secure mode of the messenger v2 protocol, which can allow an attacker to forge auth tags and potentially manipulate the data by leveraging the reuse of a nonce in a session. Messages encrypted using a reused nonce value are susceptible to serious confidentiality and integrity attacks.
How severe is CVE-2020-1759?: CVE-2020-1759 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-1759 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-1759?: CVE-2020-1759 primarily affects Redhat Ceph Storage. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-1759?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-1759 published?: CVE-2020-1759 was published on 2020-04-13 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift:4.2:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:15:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:ceph:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*

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