CVE-2026-32772

telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from...

3.4 LowFix available

telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from clients via NEW_ENVIRON SEND USERVAR.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.19%Up 0.2 points since Mar 14, 2026

What each source reports

CVE List Score used 3.4

telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from clients via NEW_ENVIRON SEND USERVAR.

Record: CVE-2026-32772
CVSS 3.1: 3.4 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
Weakness: CWE-669
Updated: 2026-11-02

EUVDEUVD-2026-12154 3.4

telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from clients via NEW_ENVIRON SEND USERVAR.

Record: EUVD-2026-12154
CVSS 3.1: 3.4 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-5p6r-4c7p-96fh 3.4

telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from...

telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from clients via NEW_ENVIRON SEND USERVAR.

Record: GHSA-5p6r-4c7p-96fh
CVSS 3.1: 3.4 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
Weakness: CWE-669
Updated: 2026-11-02

NVD 3.4

telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from clients via NEW_ENVIRON SEND USERVAR.

Record: CVE-2026-32772
CVSS 3.1: 3.4 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
CVSS 3.1: 4.7 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Weakness: CWE-669
Updated: 2026-11-02

OSVALPINE-CVE-2026-32772 4.7

telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from clients via NEW_ENVIRON SEND USERVAR.

Record: ALPINE-CVE-2026-32772
CVSS 3.1: 4.7 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Updated: 2026-11-03

OSVDEBIAN-CVE-2026-32772 4.7

telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from clients via NEW_ENVIRON SEND USERVAR.

Record: DEBIAN-CVE-2026-32772
CVSS 3.1: 4.7 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-32772 3.4

telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from clients via NEW_ENVIRON SEND USERVAR.

Record: UBUNTU-CVE-2026-32772
CVSS 3.1: 3.4 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
CVSS 3.1: 4.7 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Updated: 2026-11-02

OSVUSN-8387-1 No score

inetutils vulnerabilities

It was discovered that the Inetutils telnet daemon incorrectly handled the CREDENTIALS_DIRECTORY environment variable. An attacker could possibly use this issue to escalate privileges. (CVE-2026-28372)

It was discovered that the Inetutils telnet daemon did not properly validate buffer bounds when processing LINEMODE SLC suboptions. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-32746)

It was discovered that the Inetutils telnet client incorrectly handled the NEW_ENVIRON SEND USERVAR option. An attacker could possibly use this issue to read arbitrary environment variables. (CVE-2026-32772)

Record: USN-8387-1
Updated: 2026-11-02

Affected products

gnu inetutils

Affected packages

Affected packages
Package	Affected	Fixed
`inetutils-telnet` Alpine:v3.24	before 2.8-r0	2.8-r0
`inetutils` Debian:12	before 2:2.4-2+deb12u3, plus listed versions 2:2.4-22:2.4-2+deb12u12:2.4-2+deb12u2	2:2.4-2+deb12u3
`inetutils` Debian:13	before 2:2.6-3+deb13u3, plus listed versions 2:2.6-32:2.6-3+deb13u12:2.6-3+deb13u2	2:2.6-3+deb13u3
`inetutils` Debian:14	before 2:2.7-5, plus listed versions 2:2.6-32:2.6-42:2.7-12:2.7-22:2.7-32:2.7-4	2:2.7-5
`inetutils` Ubuntu:Pro:14.04:LTS	before 2:1.9.2-1ubuntu0.1~esm4, plus listed versions 2:1.9.1.306-0a482-12:1.9.1.363-bbc1-12:1.9.2-12:1.9.2-1ubuntu0.1~esm12:1.9.2-1ubuntu0.1~esm2	2:1.9.2-1ubuntu0.1~esm4
`inetutils` Ubuntu:Pro:16.04:LTS	before 2:1.9.4-1ubuntu0.1~esm6, plus listed versions 2:1.9.4-12:1.9.4-1build12:1.9.4-1ubuntu0.1~esm12:1.9.4-1ubuntu0.1~esm22:1.9.4-1ubuntu0.1~esm32:1.9.4-1ubuntu0.1~esm5	2:1.9.4-1ubuntu0.1~esm6
`inetutils` Ubuntu:Pro:18.04:LTS	before 2:1.9.4-3ubuntu0.1+esm5, plus listed versions 2:1.9.4-2build12:1.9.4-32:1.9.4-3ubuntu0.12:1.9.4-3ubuntu0.1+esm12:1.9.4-3ubuntu0.1+esm22:1.9.4-3ubuntu0.1+esm4	2:1.9.4-3ubuntu0.1+esm5
`inetutils` Ubuntu:Pro:20.04:LTS	before 2:1.9.4-11ubuntu0.2+esm4, plus listed versions 2:1.9.4-10build12:1.9.4-112:1.9.4-11ubuntu0.12:1.9.4-11ubuntu0.1+esm12:1.9.4-11ubuntu0.22:1.9.4-11ubuntu0.2+esm12:1.9.4-11ubuntu0.2+esm3	2:1.9.4-11ubuntu0.2+esm4
`inetutils` Ubuntu:Pro:22.04:LTS	before 2:2.2-2ubuntu0.2+esm1, plus listed versions 2:2.0-12:2.2-22:2.2-2ubuntu0.12:2.2-2ubuntu0.2	2:2.2-2ubuntu0.2+esm1
`inetutils` Ubuntu:24.04:LTS	before 2:2.5-3ubuntu4.2, plus listed versions 2:2.4-2ubuntu22:2.4-3ubuntu12:2.5-3ubuntu12:2.5-3ubuntu32:2.5-3ubuntu42:2.5-3ubuntu4.1	2:2.5-3ubuntu4.2

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Affected packages
Package	Affected	Fixed
`inetutils` Ubuntu:25.10	before 2:2.6-1ubuntu3.2, plus listed versions 2:2.5-6ubuntu12:2.6-1ubuntu12:2.6-1ubuntu32:2.6-1ubuntu3.1	2:2.6-1ubuntu3.2
`inetutils` Ubuntu:26.04:LTS	before 2:2.7-2ubuntu1.1, plus listed versions 2:2.6-1ubuntu32:2.6-4ubuntu12:2.7-2ubuntu1	2:2.7-2ubuntu1.1
`inetutils` Ubuntu:Pro:14.04:LTS From an advisory covering 3 CVEs	before 2:1.9.2-1ubuntu0.1~esm4, plus listed versions 2:1.9.1.306-0a482-12:1.9.1.363-bbc1-12:1.9.2-12:1.9.2-1ubuntu0.1~esm12:1.9.2-1ubuntu0.1~esm2	2:1.9.2-1ubuntu0.1~esm4
`inetutils` Ubuntu:Pro:16.04:LTS From an advisory covering 3 CVEs	before 2:1.9.4-1ubuntu0.1~esm6, plus listed versions 2:1.9.4-12:1.9.4-1build12:1.9.4-1ubuntu0.1~esm12:1.9.4-1ubuntu0.1~esm22:1.9.4-1ubuntu0.1~esm32:1.9.4-1ubuntu0.1~esm5	2:1.9.4-1ubuntu0.1~esm6
`inetutils` Ubuntu:Pro:18.04:LTS From an advisory covering 3 CVEs	before 2:1.9.4-3ubuntu0.1+esm5, plus listed versions 2:1.9.4-2build12:1.9.4-32:1.9.4-3ubuntu0.12:1.9.4-3ubuntu0.1+esm12:1.9.4-3ubuntu0.1+esm22:1.9.4-3ubuntu0.1+esm4	2:1.9.4-3ubuntu0.1+esm5
`inetutils` Ubuntu:Pro:20.04:LTS From an advisory covering 3 CVEs	before 2:1.9.4-11ubuntu0.2+esm4, plus listed versions 2:1.9.4-10build12:1.9.4-112:1.9.4-11ubuntu0.12:1.9.4-11ubuntu0.1+esm12:1.9.4-11ubuntu0.22:1.9.4-11ubuntu0.2+esm12:1.9.4-11ubuntu0.2+esm3	2:1.9.4-11ubuntu0.2+esm4
`inetutils` Ubuntu:Pro:22.04:LTS From an advisory covering 3 CVEs	before 2:2.2-2ubuntu0.2+esm1, plus listed versions 2:2.0-12:2.2-22:2.2-2ubuntu0.12:2.2-2ubuntu0.2	2:2.2-2ubuntu0.2+esm1
`inetutils` Ubuntu:24.04:LTS From an advisory covering 3 CVEs	before 2:2.5-3ubuntu4.2, plus listed versions 2:2.4-2ubuntu22:2.4-3ubuntu12:2.5-3ubuntu12:2.5-3ubuntu32:2.5-3ubuntu42:2.5-3ubuntu4.1	2:2.5-3ubuntu4.2
`inetutils` Ubuntu:25.10 From an advisory covering 3 CVEs	before 2:2.6-1ubuntu3.2, plus listed versions 2:2.5-6ubuntu12:2.6-1ubuntu12:2.6-1ubuntu32:2.6-1ubuntu3.1	2:2.6-1ubuntu3.2
`inetutils` Ubuntu:26.04:LTS From an advisory covering 3 CVEs	before 2:2.7-2ubuntu1.1, plus listed versions 2:2.6-1ubuntu32:2.6-4ubuntu12:2.7-2ubuntu1	2:2.7-2ubuntu1.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	affected, aliases, references	OSV
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-32772 is a low vulnerability (CVSS 3.4) in Gnu Inetutils, published March 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.19%, the 9th percentile. Fixed in inetutils-telnet 2.8-r0.

References

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