MEDIUM
In Eclipse Mosquitto 1.5.0 to 1.6.5 inclusive, if a malicious MQTT client sends a SUBSCRIBE packet containing a topic that consists of approximately 65400 or more '/' characters, i.e
Published Sep 19, 2019
6.5
MEDIUMCVSS 3.1
EPSS 2.74%
Description
In Eclipse Mosquitto 1.5.0 to 1.6.5 inclusive, if a malicious MQTT client sends a SUBSCRIBE packet containing a topic that consists of approximately 65400 or more '/' characters, i.e. the topic hierarchy separator, then a stack overflow will occur.
Affected products
-
- Version 1.5.0 to 1.6.5 inclusiveStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| The Eclipse Foundation | Eclipse Mosquitto | n/a |
|
Configuration 1
Configuration 2
- 19.04
Configuration 3
OR
- 15.0
- 15.1
Configuration 4
OR
- 29
- 30
- 31
Configuration 5
OR
- 8.0
- 10.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
6.5 MEDIUM NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
No CVSS v3.0 score for this CVE.
4.0 MEDIUM NVD
AV:N/AC:L/Au:S/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.74% 0.02742
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.02742
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (30 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 2.74% (0.02742) | 85.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.74% (0.02742) | 84.18th | v5 (v2026.06.15) |
| Jun 14, 2026 | 14.84% (0.14839) | 94.70th | v4 (v2025.03.14) |
| May 26, 2026 | 16.33% (0.16327) | 94.94th | v4 (v2025.03.14) |
| May 20, 2026 | 5.71% (0.05715) | 90.52th | v4 (v2025.03.14) |
| Dec 28, 2025 | 6.79% (0.06791) | 91.00th | v4 (v2025.03.14) |
| Dec 27, 2025 | 3.77% (0.03768) | 87.73th | v4 (v2025.03.14) |
| Nov 21, 2025 | 7.12% (0.07123) | 91.16th | v4 (v2025.03.14) |
| Nov 18, 2025 | 19.68% (0.19679) | 95.01th | v4 (v2025.03.14) |
| Oct 28, 2025 | 7.12% (0.07123) | 91.13th | v4 (v2025.03.14) |
| Oct 27, 2025 | 3.96% (0.03961) | 87.89th | v4 (v2025.03.14) |
| Oct 1, 2025 | 7.12% (0.07123) | 91.22th | v4 (v2025.03.14) |
| Jul 30, 2025 | 3.96% (0.03961) | 87.91th | v4 (v2025.03.14) |
| Mar 30, 2025 | 7.12% (0.07123) | 90.68th | v4 (v2025.03.14) |
| Mar 29, 2025 | 8.42% (0.08419) | 86.95th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.12% (0.07123) | 90.88th | v4 (v2025.03.14) |
| Dec 17, 2024 | 39.97% (0.39965) | 97.29th | v3 (v2023.03.01) |
| Sep 12, 2024 | 35.54% (0.35540) | 97.22th | v3 (v2023.03.01) |
| Jan 13, 2024 | 28.00% (0.27996) | 96.39th | v3 (v2023.03.01) |
| Nov 8, 2023 | 28.25% (0.28252) | 96.35th | v3 (v2023.03.01) |
| Aug 10, 2023 | 78.11% (0.78108) | 97.81th | v3 (v2023.03.01) |
| Jun 6, 2023 | 79.97% (0.79974) | 97.80th | v3 (v2023.03.01) |
| Mar 7, 2023 | 86.65% (0.86650) | 97.96th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 15.38% (0.15380) | 92.52th | v2 (v2022.01.01) |
| Feb 3, 2022 | 9.45% (0.09448) | 86.95th | v1 |
| Jan 6, 2022 | 9.45% (0.09448) | 86.79th | v1 |
| Jan 5, 2022 | 2.27% (0.02273) | 78.61th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.27% (0.02273) | 0.00th | v1 |
References (10)
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00077.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00008.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=551160 x_refsource_CONFIRMVendor Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D4WMHIM64Q35NGTR6R3ILZUL4MA4ANB5/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HFWQBNFTAVHPUYNGYO2TCPF5PCSWC2Z7/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWNVTFA2CKXERXRYPYE2YFTZP4GNBGYY/ vendor-advisoryx_refsource_FEDORA
- https://seclists.org/bugtraq/2019/Nov/25 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://usn.ubuntu.com/4137-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.debian.org/security/2019/dsa-4570 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner eclipse
Published Sep 19, 2019
Updated Aug 4, 2024
Reserved May 6, 2019
Link CVE-2019-11779
CISA Vulnrichment
Updated n/a