CVE-2020-9366

CRITICAL
9.8
CVSS Score
Published: February 24, 2020 at 04:20 PM UTC
Updated: June 17, 2026 at 03:27 AM UTC
1 product affected across 1 vendorScreen

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Severity
CRITICAL9.8
Exploit prediction
EPSS 3%

Description

A buffer overflow was found in the way GNU Screen before 4.8.0 treated the special escape OSC 49. Specially crafted output, or a special program, could corrupt memory and crash Screen or possibly have unspecified other impact.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.8.0
Affected range stops below 4.8.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

Mailing Listx_refsource_MLISTThird Party Advisory
http://www.openwall.com/lists/oss-security/2020/02/25/1
x_refsource_MISCMailing ListPatchRelease NotesVendor Advisory
https://lists.gnu.org/archive/html/screen-devel/2020-02/msg00007.html
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
https://security.gentoo.org/glsa/202003-62
x_refsource_MISCMailing ListPatchRelease Notes
https://www.openwall.com/lists/oss-security/2020/02/06/3

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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