CVE-2018-1000135 [High] | Information Disclosure in Networkmanager

GNOME NetworkManager version 1.10.2 and earlier contains a Information Exposure (CWE-200) vulnerability in DNS resolver that can result in Private DNS queries leaked to local network's DNS servers, while on VPN. This vulnerability appears to have been fixed in Some Ubuntu 16.04 packages were fixed, but later updates removed the fix. cf. https://bugs.launchpad.net/ubuntu/+bug/1754671 an upstream fix does not appear to be available at this time.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	1.11%	2.14%	+1.02%
2	2025-10-04	1.23%	1.11%	-0.12%
3	2025-04-07	—	1.23%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

1.11%

2.14%

+1.02%

2025-10-04

1.23%

1.11%

-0.12%

2025-04-07

—

1.23%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.0	HIGH	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	3.9	3.6	[email protected]
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:P/I:N/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:N) No integrity impact. Availability impact (A:N) No availability impact.	10.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.0

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:N): Service keeps running; no real outage angle.

3.9

3.6

[email protected]

5.0

2.0

MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:N): No integrity impact.
Availability impact (A:N): No availability impact.

10.0

2.9

[email protected]

OS Trackers for CVE-2018-1000135

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2018-1000135 not yet assigned priority: Debian including 1 source packages (network-manager), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2018-1000135
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2018-1000135
`suse`	medium	CVE-2018-1000135 severity moderate: SUSE including 352 source package names (NetworkManager, NetworkManager-1.10.6-5.6.1, …), 564 product×package rows across 82 product lines (SUSE CaaS Platform 4.5, SUSE Enterprise Storage 7, … (82 product lines)): Known Affected 231, Fixed 168, Known Not Affected 165.	https://www.suse.com/security/cve/CVE-2018-1000135/
`ubuntu`	low	CVE-2018-1000135 low priority: Ubuntu including 1 source packages (network-manager), 20 status rows across 20 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 13, ignored 3, DNE 1, needed 1, needs-triage 1, released 1.	https://ubuntu.com/security/CVE-2018-1000135

Affected software / configurations for CVE-2018-1000135

Vendor	Product	Version	Raw CPE
gnome	networkmanager	<= 1.10.2	cpe:2.3:a:gnome:networkmanager::::::::
canonical	ubuntu_linux	16.04	cpe:2.3:o:canonical:ubuntu_linux:16.04:::::::*

References for CVE-2018-1000135

URL	Tags
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00005.html
http://www.securityfocus.com/bid/103478	Third Party Advisory VDB Entry
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1754671	Issue Tracking Third Party Advisory
https://bugzilla.gnome.org/show_bug.cgi?id=746422	Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1553634	Issue Tracking Third Party Advisory

URL

CVE-2018-1000135

Exploit prediction scoring system (EPSS) score for CVE-2018-1000135

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1000135

Weakness enumeration for CVE-2018-1000135

OS Trackers for CVE-2018-1000135

Affected software / configurations for CVE-2018-1000135

References for CVE-2018-1000135