CVE-2020-14346
HIGH
7.8
CVSS Score
Published: September 15, 2020 at 12:00 AM UTC
Updated: June 17, 2026 at 02:54 AM UTC
4 products affected across 3 vendorsUbuntu LinuxEnterprise LinuxX server
Using xorg-x11-server by N/A?
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Severity
HIGH7.8
Exploit prediction
EPSS 0.6%
Description
A flaw was found in xorg-x11-server before 1.20.9. An integer underflow in the X input extension protocol decoding in the X server may lead to arbitrary access of memory contents. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%v < 1.20.9
Affected range stops below 1.20.9, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
Issue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1862246x_refsource_MISCMailing ListPatchVendor Advisory
Source: [email protected]
https://lists.x.org/archives/xorg-announce/2020-August/003058.htmlVendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202012-01Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/4488-2/Third Party AdvisoryVDB Entry
Source: [email protected]
https://www.zerodayinitiative.com/advisories/ZDI-20-1417/CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-191
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