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Fencer Intel
medium 4.0

CVE-2026-107655 json

Cups: null pointer dereference via embedded job ticket comments allows remote denial of service

published last mo. modified 4d ago also EUVD-2026-95572

cvss
4.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

A flaw was found in CUPS. When processing embedded job ticket comments within documents, the service improperly handles specific IPP attributes, causing an unhandled null pointer dereference. An unauthenticated attacker permitted to submit jobs to a shared printer queue can send a crafted Internet Printing Protocol (IPP) request to crash the print daemon, resulting in a temporary Denial of Service (DoS) for all printing services.

Patch / fix

  • Red Hat Red Hat Hardened Images 2.4.19-4.4.hum1
  • cups hummingbird 1 2.4.19-4.4.hum1
  • cups-lpd hummingbird 1 2.4.19-4.4.hum1
  • cups-libs hummingbird 1 2.4.19-4.4.hum1
  • cups-client hummingbird 1 2.4.19-4.4.hum1
  • cups-ipptool hummingbird 1 2.4.19-4.4.hum1
  • cups-filesystem hummingbird 1 2.4.19-4.4.hum1
  • cups-printerapp hummingbird 1 2.4.19-4.4.hum1

red hat advisories RHSA-2026:80679

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-107655 updated cvss 4.0

cups: NULL pointer dereference via embedded job ticket comments allows remote denial of service

  • Red Hat Enterprise Linux 6 cups, cups-lpd, cups-php, cups-libs
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 cups, cups-lpd, cups-libs, cups-client, cups-ipptool, cups-filesystem Red Hat Enterprise Linux 8 cups, cups-lpd, cups-libs, cups-client, cups-ipptool, cups-filesystem Red Hat Enterprise Linux 9 cups, cups-lpd, cups-libs, cups-client, cups-ipptool, cups-filesystem, +1 more Red Hat Enterprise Linux 10 cups
    affected: no fix available “Fix deferred”
  • Red Hat Hardened Images cups 2.4.19-4.4.hum1, cups-lpd 2.4.19-4.4.hum1, cups-libs 2.4.19-4.4.hum1, cups-client 2.4.19-4.4.hum1, cups-ipptool 2.4.19-4.4.hum1, cups-filesystem 2.4.19-4.4.hum1, +1 more
    fixed: vendor fix RHSA-2026:80679

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
last mo.

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/OpenPrinting/cups/security/advisories/GHSA-58wv-9ffm-5w78 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • Red Hat Red Hat Hardened Images
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.