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CVE.org (no NVD analysis yet)· CNA redhat

CVE-2026-107655: Cups: null pointer dereference via embedded job ticket comments allows remote denial of service

MediumCVSS 4.0 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 16/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.26% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: azl3 cups 2.4.19-1 on Azure Linux 3.0 Release Notes; azl3 cups 2.4.19-2 on Azure Linux 3.0 Release Notes.

Low priority for now. Upgrade to azl3 cups 2.4.19-1 on Azure Linux 3.0 Release Notes; azl3 cups 2.4.19-2 on Azure Linux 3.0 Release Notes or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Oct 9, 2026
Updated
Nov 5, 2026
EPSS
0.2% · 17th percentile

Report tools

JSON

Action score

16

Monitor

Low priority for now.

CVSS
16 / 40 · 4.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
4.0
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-107655

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat Enterprise Linux 10

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 9

    • all versionsaffected

  • Red Hat Red Hat Hardened Images

    • 2.4.19-4.4.hum1 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12cupsfrom 0—
Debian:14cupsbefore 2.4.20-12.4.20-1
Red Hat:hummingbird:1cupsbefore 0:2.4.19-4.4.hum10:2.4.19-4.4.hum1
Red Hat:hummingbird:1cups-clientbefore 0:2.4.19-4.4.hum10:2.4.19-4.4.hum1
Red Hat:hummingbird:1cups-develbefore 0:2.4.19-4.4.hum10:2.4.19-4.4.hum1
Red Hat:hummingbird:1cups-filesystembefore 0:2.4.19-4.4.hum10:2.4.19-4.4.hum1
Red Hat:hummingbird:1cups-ipptoolbefore 0:2.4.19-4.4.hum10:2.4.19-4.4.hum1
Red Hat:hummingbird:1cups-libsbefore 0:2.4.19-4.4.hum10:2.4.19-4.4.hum1
Red Hat:hummingbird:1cups-lpdbefore 0:2.4.19-4.4.hum10:2.4.19-4.4.hum1
Red Hat:hummingbird:1cups-printerappbefore 0:2.4.19-4.4.hum10:2.4.19-4.4.hum1

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-90954Busybox: busybox: dpkg-deb extraction-root escape via per-ar-member deferred symlink flush
    31Monitor
  • CVE-2026-96512Sudo: sudo: tz environment variable allows bypass of notbefore/notafter time-based authorization
    31Monitor
  • CVE-2026-78410Util-linux: util-linux: restricted bind mounts do not pin the source, allowing x-mount.owner/group/mode redirection
    31Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-107444Oct 8, 2026 · Rubygem-katello: katello: katello: katello docker tags repositories api cross-organization authorization bypass
    17Monitor
  • ← EarlierCVE-2026-107445Oct 8, 2026 · Rubygem-katello: katello: katello: katello flatpak remote repositories api cross-organization authorization bypass
    21Monitor
  • Later →CVE-2026-88833Oct 13, 2026 · Busybox: busybox: udhcpc integer underflow in dhcp packet length calculation causes denial of service
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
azl3 cups 2.4.19-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 cups 2.4.19-2 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
debian:cups2.4.20-1 · Debian:14Package registry (OSV)
red hat:cups0:2.4.19-4.4.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:cups-client0:2.4.19-4.4.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:cups-devel0:2.4.19-4.4.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:cups-filesystem0:2.4.19-4.4.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:cups-ipptool0:2.4.19-4.4.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:cups-libs0:2.4.19-4.4.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:cups-lpd0:2.4.19-4.4.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:cups-printerapp0:2.4.19-4.4.hum1 · Red Hat:hummingbird:1Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recorded+5 d
  3. TodayNov 13, 2026+35 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-7678122 days apartLibxml2: libxml2: null pointer dereference parsing nextcatalog without catalog attribute
    22Monitor

Not on record for this CVE: researcher credit · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
low · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
Low

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓
  2. SSVC exploitation— → poc
  3. Exploit maturity— → none

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records