Description
In kdeconnect-kde (aka KDE Connect) before 20.08.2, an attacker on the local network could send crafted packets that trigger use of large amounts of CPU, memory, or network connection slots, aka a Denial of Service attack.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | kdeconnect | 20.08.2-1 | — |
| Debian 13 | kdeconnect | 20.08.2-1 | — |
| Debian 12 | kdeconnect | 20.08.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | kdeconnect | No fix yet | — |
| Ubuntu 26.04 LTS | kdeconnect | No fix yet | — |
| Ubuntu 25.10 | kdeconnect | No fix yet | — |
| Ubuntu 24.04 LTS | kdeconnect | No fix yet | — |
| Ubuntu 22.04 LTS | kdeconnect | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | kdeconnect | No fix yet | — |
| Ubuntu 18.04 LTS | kdeconnect | No fix yet | — |
| Ubuntu 16.04 LTS | kdeconnect | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP2 | kdeconnect-kde | 20.04.2-bp152.2.3.1 | openSUSE-SU-2020:1650-1 |
| SUSE Package Hub 15 SP1 | kdeconnect-kde | 1.3.3-bp151.4.3.1 | openSUSE-SU-2020:1647-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.2 | kdeconnect-kde | 20.04.2-lp152.2.3.1 | openSUSE-SU-2020:1631-1 |
| openSUSE Leap 15.1 | kdeconnect-kde | 20.04.2-lp152.2.3.1 | openSUSE-SU-2020:1631-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | kdeconnect | 20.08.2-r0 | — |
| Alpine v3.23 | kdeconnect | 20.08.2-r0 | — |
| Alpine v3.22 | kdeconnect | 20.08.2-r0 | — |
| Alpine v3.21 | kdeconnect | 20.08.2-r0 | — |
| Alpine v3.20 | kdeconnect | 20.08.2-r0 | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | kdeconnect | 20.08.2-r0 | — |
| Alpine v3.18 | kdeconnect | 20.08.2-r0 | — |
| Alpine v3.17 | kdeconnect | 20.08.2-r0 | — |
| Alpine v3.16 | kdeconnect | 20.08.2-r0 | — |
| Alpine v3.15 | kdeconnect | 20.08.2-r0 | — |
| Alpine v3.14 | kdeconnect | 20.08.2-r0 | — |
| Alpine v3.13 | kdeconnect | 20.08.2-r0 | — |
Advisories 3
- openSUSE-SU-2020:1647-1 Security update for kdeconnect-kde SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1650-1 Security update for kdeconnect-kde SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1631-1 Security update for kdeconnect-kde SUSE / openSUSE Security Updates · May 7, 2025
References
- https://kdeconnect.kde.org/official/
- https://github.com/KDE/kdeconnect-kde/releases
- https://bugzilla.suse.com/show_bug.cgi?id=1176268
- https://lists.opensuse.org/opensuse-security-announce/2020-10/msg00014.html
- https://github.com/KDE/kdeconnect-kde/commit/ce0f00fc2d3eccb51d0af4eba61a4f60de086a59
- https://github.com/KDE/kdeconnect-kde/commit/542d94a70c56aa386c8d4d793481ce181b0422e8
- https://github.com/KDE/kdeconnect-kde/commit/613899be24b6e2a6b3e5cc719efce8ae8a122991
- https://github.com/KDE/kdeconnect-kde/commit/024e5f23db8d8ad3449714b906b46094baaffb89
- https://github.com/KDE/kdeconnect-kde/commit/4fbd01a3d44a0bcca888c49a77ec7cfd10e113d7
- https://github.com/KDE/kdeconnect-kde/commit/8112729eb0f13e6947984416118531078e65580d
- https://kde.org/info/security/advisory-20201002-1.txt
- openSUSE-SU-2020:1647 vendor-advisory
- openSUSE-SU-2020:1650 vendor-advisory
- [oss-security] 20201013 Re: kdeconnect: CVE-2020-26164: multiple security issues in kdeconnectd network daemon mailing-list
- [oss-security] 20201013 kdeconnect: CVE-2020-26164: multiple security issues in kdeconnectd network daemon mailing-list
- [oss-security] 20201014 Re: kdeconnect: CVE-2020-26164: multiple security issues in kdeconnectd network daemon mailing-list
- [oss-security] 20201130 Re: kdeconnect: CVE-2020-26164: multiple security issues in kdeconnectd network daemon mailing-list
- GLSA-202101-16 vendor-advisory