MEDIUM
CVE-2020-10773
CWE-626Published: September 10, 2020· Updated: Jun 17, 2026
4.4
CVSS v3.1
Official Description
A stack information leak flaw was found in s390/s390x in the Linux kernel’s memory manager functionality, where it incorrectly writes to the /proc/sys/vm/cmm_timeout file. This flaw allows a local user to see the kernel data.
Technical Analysis
CVE-2020-10773 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 4.4.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Affected Vendors & Products
Linux1 product(s)
linux kernel
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories
All References (4)
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10773Issue Tracking · Third Party Advisory
→
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10773Issue Tracking · Third Party Advisory
Quick Facts
CVE IDCVE-2020-10773
CVSS Score4.4 / 10
SeverityMEDIUM
WeaknessCWE-626
CISA KEVNo
Affected1 vendor(s)
PublishedSep 10, 2020
Related CVEs (CWE-626)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-10773 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.