9

CVE-2026-4480: Samba: samba: remote code execution in printing subsystem via unescaped job description

Modified
AliasesALPINE-CVE-2026-4480UBUNTU-CVE-2026-4480DEBIAN-CVE-2026-4480
Published 26-05-2026Last modified 01-09-2026

Vulnerability summary

CVE-2026-4480 is a critical (CVSS 9.0) vulnerability in redhat enterprise_linux. EPSS estimates a 13.93% chance of exploitation in the next 30 days, higher than 96.5% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 14% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.0/10
010
Critical · v3.1 (CVE.org)
EPSS score
13.93%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 20 · Related 10
OPENSUSE-SU-2026:10884-1OPENSUSE-SU-2026:20905-1OPENSUSE-SU-2026:21540-1RHSA-2026:22644RHSA-2026:22963RHSA-2026:25049

Timeline

  1. 26-05-2026
    PublishedVulnerability first disclosed.
  2. 01-09-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in the Samba printing subsystem. Samba passes the client-controlled job description string to the command configured with the "print command" setting via the "%J" substitution character without escaping shell meta characters. A remote attacker could exploit this vulnerability by sending a specially crafted print job description that contains unescaped shell characters. This could lead to remote code execution on the affected system.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

13.93%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

No change 0.00 pp

From 13.93% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat2 products
Alpine1 product
  • samba≥ 4.1.0, < 4.22.10-r0 | ≥ 4.1.0, < 4.23.8-r0
Debian1 product
  • samba< 2:4.17.12+dfsg-0+deb12u4 | < 2:4.22.8+dfsg-0+deb13u2 | < 2:4.24.3+dfsg-1
Samba1 product
Ubuntu1 product
  • sambaAll versions (No fix recorded) | < 2:4.15.13+dfsg-0ubuntu0.20.04.8+esm2 | < 2:4.15.13+dfsg-0ubuntu1.12 | < 2:4.19.5+dfsg-4ubuntu9.6 | < 2:4.22.3+dfsg-4ubuntu2.4 | < 2:4.23.6+dfsg-1ubuntu2.1

5 vendors · 6 products

References

21 links
Show all 21 references