CVE-2026-27447

mediumpriority · track · 25OT risk · elevatedEPSS 0.003 · 21 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.28% (21st) EPSS
CVSS 6.3 · medium
Is it mine?
32 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.

01

cvss

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

6.3
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:Nprimary · NVD / NIST USexploitability 2.1 · impact 4.2
v3.14.8mediumAV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:Nsecondary · FSTEC (BDU) RU
v3.14.8mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:Nsecondary · ENISA EU
v3.14.8mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:Nsecondary · security-advisories@github.comexploitability 0.5 · impact 4.2
v3.15.8mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

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

Exploitation: poc · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-863USCWE-863US
04

affected products (32)

Products and version ranges known to be affected.

showing 20 of 32
05

advisories (1)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-0947CUPS: Mehrere SchwachstellenDeutsch2026-03-31csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in CUPS ausnutzen, um Sicherheitsvorkehrungen zu umgehen, beliebigen Code auszuführen, erweiterte Rechte zu erlangen, Daten zu manipulieren oder einen Denial-of-Service-Zustand herbeizuführen.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundNVDCVE.orgMITRE
published 2026-04-03modified 2026-09-22
08

references (6)

External citations — patches, advisories, analysis.

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