Description
In Eclipse Mosquitto version from 1.0 to 1.4.15, a Null Dereference vulnerability was found in the Mosquitto library which could lead to crashes for those applications using the library.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The Eclipse Foundation | Eclipse Mosquitto | 1.0 – < unspecified, unspecified – ≤ 1.4.15 | unspecified |
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 | mosquitto | 1.5.4-1 | — |
| Debian 13 | mosquitto | 1.5.4-1 | — |
| Debian 12 | mosquitto | 1.5.4-1 | — |
| Debian 9 | mosquitto | 1.4.10-3+deb9u5 | DLA-2793-1 |
| Debian 8 | mosquitto | 1.3.4-2+deb8u4 | DLA-1972-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | mosquitto | 1.4.15-2ubuntu0.18.04.3+esm1 | USN-4823-1 |
| Ubuntu Pro 16.04 LTS | mosquitto | 1.4.8-1ubuntu0.16.04.7+esm1 | USN-4823-1 |
Advisories 4
- USN-4823-1 mosquitto vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-2793-1 mosquitto - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1972-1 mosquitto - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2023-1737 Juniper Patchday Juli 2023 BSI CERT-Bund (WID) · Jul 12, 2023