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NVD / CVE Program· CNA securin

CVE-2026-44060: Integer underflow in dsi_writeinit() leads to denial of service

Noroxi assessment

Priority: Monitor (action score 30/100)

  • 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: 0.32% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: netatalk (Alpine:v3.24) 4.4.3-r0; netatalk (Debian:13) 4.2.3~ds-1+deb13u2; netatalk (Debian:14) 4.4.3~ds-1.

Low priority for now. Upgrade to netatalk (Alpine:v3.24) 4.4.3-r0; netatalk (Debian:13) 4.2.3~ds-1+deb13u2; netatalk (Debian:14) 4.4.3~ds-1 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

An integer underflow in dsi_writeinit() in Netatalk 1.5.0 through 4.4.2 allows a remote unauthenticated attacker to cause a denial of service via a crafted DSI write request.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
May 21, 2026
Updated
Jul 20, 2026
EPSS
0.3% · 26th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · securin
7.5
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-2026-44060

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 (securin). Independent of NVD's CPE analysis and usually ahead of it.

  • Netatalk Netatalk

    • 4.4.3not affected
    • 1.5.0 and later · up to and including 4.4.2affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Alpine:v3.24netatalkbefore 4.4.3-r04.4.3-r0
Debian:13netatalkbefore 4.2.3~ds-1+deb13u24.2.3~ds-1+deb13u2
Debian:14netatalkbefore 4.4.3~ds-14.4.3~ds-1

Same product

netatalk: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-1160Netatalk before 3.1.12 is vulnerable to an out of bounds write in dsi_opensess.c.
    65This week
  • CVE-2022-43634This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk.
    45Plan
  • CVE-2022-23121This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk.
    42Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-44058May 21, 2026 · Authentication bypass via admin auth user
    28Monitor
  • ← EarlierCVE-2026-44059May 21, 2026 · Non-reentrant privilege toggle
    18Monitor
  • Later →CVE-2026-44061May 21, 2026 · DES-ECB auth with timing side channel
    23Monitor

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
alpine:netatalk4.4.3-r0 · Alpine:v3.24Package registry (OSV)
debian:netatalk4.2.3~ds-1+deb13u2 · Debian:13Package 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.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

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

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

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

  • CVE-2026-4569985 days apartNetatalk has Integer Underflow → Stack Buffer Overflow in copydir()
    30Monitor
  • CVE-2026-4569888 days apartNetatalk has Integer Underflow → Stack Buffer Overflow in deletedir()
    30Monitor
  • CVE-2026-440690 days apartInteger underflow in volxlate
    15Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet 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
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-191 · Integer Underflow (Wrap or Wraparound)

CVSS vector

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

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✗ → ✓

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

References

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

All records