CVE-2026-58093

highpriority · track · 0EPSS 0.001 · 1 %ileRUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.10% (1st) EPSS
CVSS 7 · high
Is it mine?
6 products
Check your exposure
Who says so?
3 sources
fstec_bdu · nvd · zdi

EPSS · scored 2026-10-28

The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring the tty lock, the handler did not revalidate the state of the terminal, and could proceed to link a terminal that was concurrently being destroyed to the calling process' session. An unprivileged local user can exploit this race condition to escalate privileges.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.0
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.4–7

v3.17highAV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 1 · impact 5.9
v3.16.4mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-362USCWE-362USCWE-416USCWE-416US
04

affected products (6)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

06

also known as (1)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

fstec_bdunvdzdiNVDCVE.orgMITRE
published 2026-08-26modified 2026-09-18
08

references (1) nvd

External citations — patches, advisories, analysis.

scry

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