CVE-2020-10736

An authorization bypass vulnerability was found in Ceph versions 15.2.0 before 15.2.2, where the ceph-mon and ceph-mgr daemons do not properly restrict access, resulting in gaining access to unauthorized resources. This flaw allows an authenticated client to modify the configuration and possibly conduct further attacks.

Published: 2020-06-22 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-10736 is rated Moderate Risk (48.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.65%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-10736

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.07% 0.65% +0.58%
2 2025-03-30 0.19% 0.07% -0.13%
3 2025-03-29 — 0.19% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-10736

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.0 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.1 5.9 [email protected]
8.0 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.1 5.9 [email protected]
5.2 2.0 MEDIUM
AV:A/AC:L/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 5.1 6.4 [email protected]

Weakness enumeration for CVE-2020-10736

OS Trackers for CVE-2020-10736

vendor priority summary link
alpine high CVE-2020-10736: 2 source package rows (ceph, ceph16); 4 state rows across 3 repos (3.17-community, 3.18-community, edge-community); fixed 4, open 0. https://security.alpinelinux.org/vuln/CVE-2020-10736
debian unimportant CVE-2020-10736 unimportant priority: Debian including 1 source packages (ceph), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-10736
redhat high — https://access.redhat.com/security/cve/CVE-2020-10736
ubuntu medium CVE-2020-10736 medium priority: Ubuntu including 1 source packages (ceph), 7 status rows across 7 suites (bionic, eoan, focal, groovy, trusty, upstream, xenial): not-affected 3, released 3, ignored 1. https://ubuntu.com/security/CVE-2020-10736

Affected software / configurations for CVE-2020-10736

Vendor Product Version Raw CPE
linuxfoundation ceph >= 15.2.0, < 15.2.2 cpe:2.3:a:linuxfoundation:ceph:*:*:*:*:*:*:*:*

References for CVE-2020-10736

URL Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10736 Issue Tracking Third Party Advisory
https://ceph.io/releases/v15-2-2-octopus-released/ Release Notes Vendor Advisory
cvelogic Threat Intelligence