CVE-2012-2736: In NetworkManager 0.9.2.0, when a new wireless network was created with WPA/WPA2 security in AdHoc mode, it cr

Routine

MEDIUM 4.4WATCHLISTDOWNGRADEMITIGATEMITIGATE

CVE-2012-2736 is a medium-severity flaw (CVSS 4.4) affecting networkmanager, debian linux, ubuntu linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In NetworkManager 0.9.2.0, when a new wireless network was created with WPA/WPA2 security in AdHoc mode, it created an open/insecure network.

Why this priority

Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.4 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-306
Published	2019-12-26
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: canonical · debian · gnome · opensuse

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-12-26 20:15 UTCPublished CVE record published
2026-06-16 23:42 UTCUpdated Record last modified

gnome networkmanager DOWNGRADE

Affected: 0.9.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.2.0

1. Check installed version

apt-cache policy networkmanager || rpm -q networkmanager || networkmanager --version

2. No fixed release: DOWNGRADE to a release before 0.9.2.0 (Debian / Ubuntu)

apt-cache madison networkmanager sudo apt install networkmanager=<VERSION_BEFORE_0.9.2.0> sudo apt-mark hold networkmanager

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list networkmanager sudo dnf downgrade networkmanager-<VERSION_BEFORE_0.9.2.0> sudo dnf versionlock add networkmanager

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

debian debian linux MITIGATE

Affected: 8.0 · 9.0 · 10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

canonical ubuntu linux MITIGATE

Affected: 10.04 · 11.04 · 11.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.04

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

opensuse opensuse MITIGATE

Affected: 12.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 12.1

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2012-2736?

networkmanager: downgrade or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2012-2736 being exploited?

CVE-2012-2736 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2012-2736 affect?

CVE-2012-2736 affects networkmanager, debian linux, ubuntu linux. Severity is medium (CVSS 4.4). In NetworkManager 0.9.2.0, when a new wireless network was created with WPA/WPA2 security in AdHoc mode, it created an open/insecure network.

How urgent is CVE-2012-2736?

Priority 35/100. Public exploit reference; On your watchlist

Software pages

Ubuntu vulnerabilities · Debian vulnerabilities

Related CVEs

CVE-2021-20297 MEDIUM 5.5 UPGRADE DOWNGRADE A flaw was found in NetworkManager in versions before 1.30.0
CVE-2020-10754 MEDIUM 4.3 UPGRADE MITIGATE It was found that nmcli, a command line interface to NetworkManager did not honour 802-1x.ca-path and 802-1x.p
CVE-2018-1000135 HIGH 7.5 UPGRADE MITIGATE GNOME NetworkManager version 1.10.2 and earlier contains a Information Exposure (CWE-200) vulnerability in DNS
CVE-2016-0764 MEDIUM 6.2 UPGRADE Race condition in Network Manager before 1.0.12 as packaged in Red Hat Enterprise Linux Desktop 7, Red Hat Ent
CVE-2015-2924 LOW 3.3 UPGRADE The receive_ra function in rdisc/nm-lndp-rdisc.c in the Neighbor Discovery (ND) protocol implementation in the

References

← Back to latest CVEs