CVE-2026-46862
Vulnerability in the MySQL Router product of Oracle MySQL (component: Router: General). ...
Vulnerability in the MySQL Router product of Oracle MySQL (component: Router: General). Supported versions that are affected are 8.4.0-8.4.9 and 9.0.0-9.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise MySQL Router. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Router. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Vulnerability in the MySQL Router product of Oracle MySQL (component: Router: General). Supported versions that are affected are 8.4.0-8.4.9 and 9.0.0-9.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise MySQL Router. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Router. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
- Record
CVE-2026-46862- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
EUVDEUVD-2026-37355
Vulnerability in the MySQL Router product of Oracle MySQL (component: Router: General). Supported versions that are affected are 8.4.0-8.4.9 and 9.0.0-9.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise MySQL Router. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Router. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
- Record
EUVD-2026-37355- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-658f-6m2q-8572
Vulnerability in the MySQL Router product of Oracle MySQL (component: Router: General). ...
Vulnerability in the MySQL Router product of Oracle MySQL (component: Router: General). Supported versions that are affected are 8.4.0-8.4.9 and 9.0.0-9.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise MySQL Router. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Router. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
- Record
GHSA-658f-6m2q-8572- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
NVD
Vulnerability in the MySQL Router product of Oracle MySQL (component: Router: General). Supported versions that are affected are 8.4.0-8.4.9 and 9.0.0-9.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise MySQL Router. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Router. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
- Record
CVE-2026-46862- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-46862
Vulnerability in the MySQL Router product of Oracle MySQL (component: Router: General). Supported versions that are affected are 8.4.0-8.4.9 and 9.0.0-9.7.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise MySQL Router. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Router. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
- Record
UBUNTU-CVE-2026-46862- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUSN-8457-1 No score
mysql-8.0, mysql-8.4 vulnerabilities
It was discovered that MySQL Router incorrectly handled repeated TLS protocol upgrade requests. An unauthenticated remote attacker could possibly use this issue to cause MySQL Router to crash, resulting in a denial of service. (CVE-2026-46862)
It was discovered that MySQL Server incorrectly handled connection authentication. An unauthenticated remote attacker could possibly use this issue to cause MySQL to crash, resulting in a denial of service. (CVE-2026-46863)
- Record
USN-8457-1- Updated
- 2026-11-02
OSVUSN-8457-2 No score
mysql-8.0 vulnerabilities
USN-8457-1 fixed several vulnerabilities in MySQL. This update provides the corresponding fixes for MySQL on Ubuntu 20.04 LTS
Original advisory details:
It was discovered that MySQL Router incorrectly handled repeated TLS protocol upgrade requests. An unauthenticated remote attacker could possibly use this issue to cause MySQL Router to crash, resulting in a denial of service. (CVE-2026-46862)
It was discovered that MySQL Server incorrectly handled connection authentication. An unauthenticated remote attacker could possibly use this issue to cause MySQL to crash, resulting in a denial of service. (CVE-2026-46863)
- Record
USN-8457-2- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mysql-5.5Ubuntu:14.04:LTS |
All versions, plus listed versions 5.5.32-0ubuntu75.5.34-0ubuntu15.5.34-0ubuntu25.5.35-0ubuntu15.5.35+dfsg-1ubuntu1 Show 20 moreShow less5.5.37-0ubuntu0.14.04.15.5.38-0ubuntu0.14.04.15.5.40-0ubuntu0.14.04.15.5.41-0ubuntu0.14.04.15.5.43-0ubuntu0.14.04.15.5.44-0ubuntu0.14.04.15.5.46-0ubuntu0.14.04.25.5.47-0ubuntu0.14.04.15.5.49-0ubuntu0.14.04.15.5.50-0ubuntu0.14.04.15.5.52-0ubuntu0.14.04.15.5.53-0ubuntu0.14.04.15.5.54-0ubuntu0.14.04.15.5.55-0ubuntu0.14.04.15.5.57-0ubuntu0.14.04.15.5.58-0ubuntu0.14.04.15.5.59-0ubuntu0.14.04.15.5.60-0ubuntu0.14.04.15.5.61-0ubuntu0.14.04.15.5.62-0ubuntu0.14.04.1 |
None known |
mysql-5.7Ubuntu:Pro:16.04:LTS |
All versions, plus listed versions 5.7.11-0ubuntu45.7.11-0ubuntu55.7.11-0ubuntu65.7.12-0ubuntu15.7.12-0ubuntu1.1 Show 31 moreShow less5.7.13-0ubuntu0.16.04.25.7.15-0ubuntu0.16.04.15.7.16-0ubuntu0.16.04.15.7.17-0ubuntu0.16.04.15.7.17-0ubuntu0.16.04.25.7.18-0ubuntu0.16.04.15.7.19-0ubuntu0.16.04.15.7.20-0ubuntu0.16.04.15.7.21-0ubuntu0.16.04.15.7.22-0ubuntu0.16.04.15.7.23-0ubuntu0.16.04.15.7.24-0ubuntu0.16.04.15.7.25-0ubuntu0.16.04.25.7.26-0ubuntu0.16.04.15.7.27-0ubuntu0.16.04.15.7.28-0ubuntu0.16.04.25.7.29-0ubuntu0.16.04.15.7.30-0ubuntu0.16.04.15.7.31-0ubuntu0.16.04.15.7.32-0ubuntu0.16.04.15.7.33-0ubuntu0.16.04.15.7.35-0ubuntu0.16.04.1+esm15.7.36-0ubuntu0.16.04.1+esm15.7.37-0ubuntu0.16.04.1+esm15.7.38-0ubuntu0.16.04.1+esm15.7.39-0ubuntu0.16.04.1+esm25.7.40-0ubuntu0.16.04.1+esm15.7.41-0ubuntu0.16.04.1+esm15.7.42-0ubuntu0.16.04.1+esm15.7.43-0ubuntu0.16.04.1+esm15.7.44-0ubuntu0.16.04.1+esm1 |
None known |
percona-server-5.6Ubuntu:16.04:LTS |
All versions, plus listed versions 5.6.22-rel71.0-0ubuntu25.6.22-rel71.0-0ubuntu45.6.22-rel71.0-0ubuntu4.1 |
None known |
percona-xtradb-cluster-5.6Ubuntu:16.04:LTS |
All versions, plus listed versions 5.6.21-25.8-0ubuntu25.6.21-25.8-0ubuntu35.6.21-25.8-0ubuntu3.15.6.21-25.8-0ubuntu3.25.6.34-26.19-0ubuntu0.16.04.15.6.34-26.19-0ubuntu0.16.04.25.6.37-26.21-0ubuntu0.16.04.15.6.37-26.21-0ubuntu0.16.04.2 |
None known |
mysql-5.7Ubuntu:Pro:18.04:LTS |
All versions, plus listed versions 5.7.19-0ubuntu15.7.20-0ubuntu0.17.10.15.7.20-1ubuntu15.7.21-1ubuntu15.7.22-0ubuntu18.04.1 Show 23 moreShow less5.7.23-0ubuntu0.18.04.15.7.24-0ubuntu0.18.04.15.7.25-0ubuntu0.18.04.25.7.26-0ubuntu0.18.04.15.7.27-0ubuntu0.18.04.15.7.28-0ubuntu0.18.04.45.7.29-0ubuntu0.18.04.15.7.30-0ubuntu0.18.04.15.7.31-0ubuntu0.18.04.15.7.32-0ubuntu0.18.04.15.7.33-0ubuntu0.18.04.15.7.34-0ubuntu0.18.04.15.7.35-0ubuntu0.18.04.15.7.35-0ubuntu0.18.04.25.7.36-0ubuntu0.18.04.15.7.37-0ubuntu0.18.04.15.7.38-0ubuntu0.18.04.15.7.39-0ubuntu0.18.04.25.7.40-0ubuntu0.18.04.15.7.41-0ubuntu0.18.04.15.7.42-0ubuntu0.18.04.15.7.43-0ubuntu0.18.04.1+esm15.7.44-0ubuntu0.18.04.1+esm1 |
None known |
mysql-8.0Ubuntu:Pro:20.04:LTS |
before 8.0.46-0ubuntu0.20.04.1+esm3, plus listed versions 8.0.17-0ubuntu28.0.17-0ubuntu38.0.18-0ubuntu38.0.18-0ubuntu48.0.18-0ubuntu5 Show 36 moreShow less8.0.19-0ubuntu28.0.19-0ubuntu38.0.19-0ubuntu48.0.19-0ubuntu58.0.20-0ubuntu0.20.04.18.0.21-0ubuntu0.20.04.38.0.21-0ubuntu0.20.04.48.0.22-0ubuntu0.20.04.28.0.22-0ubuntu0.20.04.38.0.23-0ubuntu0.20.04.18.0.25-0ubuntu0.20.04.18.0.26-0ubuntu0.20.04.28.0.26-0ubuntu0.20.04.38.0.27-0ubuntu0.20.04.18.0.28-0ubuntu0.20.04.38.0.29-0ubuntu0.20.04.28.0.29-0ubuntu0.20.04.38.0.30-0ubuntu0.20.04.28.0.31-0ubuntu0.20.04.18.0.31-0ubuntu0.20.04.28.0.32-0buntu0.20.04.18.0.32-0ubuntu0.20.04.28.0.33-0ubuntu0.20.04.18.0.33-0ubuntu0.20.04.28.0.33-0ubuntu0.20.04.48.0.34-0ubuntu0.20.04.18.0.35-0ubuntu0.20.04.18.0.36-0ubuntu0.20.04.18.0.37-0ubuntu0.20.04.38.0.39-0ubuntu0.20.04.18.0.40-0ubuntu0.20.04.18.0.41-0ubuntu0.20.04.18.0.42-0ubuntu0.20.04.18.0.43-0ubuntu0.20.04.1+esm18.0.45-0ubuntu0.20.04.1+esm28.0.46-0ubuntu0.20.04.1+esm2 |
8.0.46-0ubuntu0.20.04.1+esm3 |
mariadb-10.3Ubuntu:20.04:LTS |
All versions, plus listed versions 1:10.3.17-11:10.3.18-11:10.3.19-11:10.3.21-21:10.3.22-1 Show 10 moreShow less1:10.3.22-1ubuntu11:10.3.25-0ubuntu0.20.04.11:10.3.29-0ubuntu0.20.04.11:10.3.30-0ubuntu0.20.04.11:10.3.31-0ubuntu0.20.04.11:10.3.32-0ubuntu0.20.04.11:10.3.34-0ubuntu0.20.04.11:10.3.37-0ubuntu0.20.04.11:10.3.38-0ubuntu0.20.04.11:10.3.39-0ubuntu0.20.04.2 |
None known |
mysql-8.0Ubuntu:22.04:LTS |
before 8.0.46-0ubuntu0.22.04.3, plus listed versions 8.0.26-0ubuntu18.0.27-0ubuntu0.21.10.18.0.28-0ubuntu38.0.28-0ubuntu48.0.29-0ubuntu0.22.04.1 Show 24 moreShow less8.0.29-0ubuntu0.22.04.28.0.29-0ubuntu0.22.04.38.0.30-0ubuntu0.22.04.18.0.31-0ubuntu0.22.04.18.0.32-0buntu0.22.04.18.0.32-0ubuntu0.22.04.28.0.33-0ubuntu0.22.04.18.0.33-0ubuntu0.22.04.28.0.33-0ubuntu0.22.04.48.0.34-0ubuntu0.22.04.18.0.35-0ubuntu0.22.04.18.0.36-0ubuntu0.22.04.18.0.37-0ubuntu0.22.04.38.0.39-0ubuntu0.22.04.18.0.40-0ubuntu0.22.04.18.0.41-0ubuntu0.22.04.18.0.42-0ubuntu0.22.04.18.0.42-0ubuntu0.22.04.28.0.43-0ubuntu0.22.04.18.0.43-0ubuntu0.22.04.28.0.44-0ubuntu0.22.04.18.0.44-0ubuntu0.22.04.28.0.45-0ubuntu0.22.04.18.0.46-0ubuntu0.22.04.2 |
8.0.46-0ubuntu0.22.04.3 |
mysql-8.0Ubuntu:24.04:LTS |
before 8.0.46-0ubuntu0.24.04.3, plus listed versions 8.0.34-1ubuntu18.0.35-1ubuntu18.0.35-1ubuntu28.0.36-18.0.36-2ubuntu1 Show 15 moreShow less8.0.36-2ubuntu28.0.36-2ubuntu38.0.37-0ubuntu0.24.04.18.0.39-0ubuntu0.24.04.18.0.39-0ubuntu0.24.04.28.0.40-0ubuntu0.24.04.18.0.41-0ubuntu0.24.04.18.0.42-0ubuntu0.24.04.18.0.42-0ubuntu0.24.04.28.0.43-0ubuntu0.24.04.18.0.43-0ubuntu0.24.04.28.0.44-0ubuntu0.24.04.18.0.44-0ubuntu0.24.04.28.0.45-0ubuntu0.24.04.18.0.46-0ubuntu0.24.04.2 |
8.0.46-0ubuntu0.24.04.3 |
mariadbUbuntu:25.10 |
All versions, plus listed versions 1:11.4.5-11:11.8.1-41:11.8.1-5ubuntu21:11.8.2-1ubuntu11:11.8.3-11:11.8.3-1build1 |
None known |
Show 7 moreShow less
| Package | Affected | Fixed |
|---|---|---|
mysql-8.4Ubuntu:25.10 |
before 8.4.10-0ubuntu0.25.10.1, plus listed versions 8.4.4-0ubuntu28.4.5-0ubuntu18.4.5-0ubuntu28.4.5-0ubuntu38.4.6-0ubuntu1 Show 5 moreShow less8.4.6-0ubuntu38.4.7-0ubuntu0.25.10.28.4.7-0ubuntu0.25.10.38.4.8-0ubuntu0.25.10.18.4.9-0ubuntu0.25.10.1 |
8.4.10-0ubuntu0.25.10.1 |
mysql-8.4Ubuntu:26.04:LTS |
before 8.4.10-0ubuntu0.26.04.1, plus listed versions 8.4.6-0ubuntu38.4.7-0ubuntu28.4.7-0ubuntu38.4.8-0ubuntu18.4.9-0ubuntu0.26.04.1 |
8.4.10-0ubuntu0.26.04.1 |
mysql-8.0Ubuntu:22.04:LTS From an advisory covering 2 CVEs |
before 8.0.46-0ubuntu0.22.04.3, plus listed versions 8.0.26-0ubuntu18.0.27-0ubuntu0.21.10.18.0.28-0ubuntu38.0.28-0ubuntu48.0.29-0ubuntu0.22.04.1 Show 24 moreShow less8.0.29-0ubuntu0.22.04.28.0.29-0ubuntu0.22.04.38.0.30-0ubuntu0.22.04.18.0.31-0ubuntu0.22.04.18.0.32-0buntu0.22.04.18.0.32-0ubuntu0.22.04.28.0.33-0ubuntu0.22.04.18.0.33-0ubuntu0.22.04.28.0.33-0ubuntu0.22.04.48.0.34-0ubuntu0.22.04.18.0.35-0ubuntu0.22.04.18.0.36-0ubuntu0.22.04.18.0.37-0ubuntu0.22.04.38.0.39-0ubuntu0.22.04.18.0.40-0ubuntu0.22.04.18.0.41-0ubuntu0.22.04.18.0.42-0ubuntu0.22.04.18.0.42-0ubuntu0.22.04.28.0.43-0ubuntu0.22.04.18.0.43-0ubuntu0.22.04.28.0.44-0ubuntu0.22.04.18.0.44-0ubuntu0.22.04.28.0.45-0ubuntu0.22.04.18.0.46-0ubuntu0.22.04.2 |
8.0.46-0ubuntu0.22.04.3 |
mysql-8.0Ubuntu:24.04:LTS From an advisory covering 2 CVEs |
before 8.0.46-0ubuntu0.24.04.3, plus listed versions 8.0.34-1ubuntu18.0.35-1ubuntu18.0.35-1ubuntu28.0.36-18.0.36-2ubuntu1 Show 15 moreShow less8.0.36-2ubuntu28.0.36-2ubuntu38.0.37-0ubuntu0.24.04.18.0.39-0ubuntu0.24.04.18.0.39-0ubuntu0.24.04.28.0.40-0ubuntu0.24.04.18.0.41-0ubuntu0.24.04.18.0.42-0ubuntu0.24.04.18.0.42-0ubuntu0.24.04.28.0.43-0ubuntu0.24.04.18.0.43-0ubuntu0.24.04.28.0.44-0ubuntu0.24.04.18.0.44-0ubuntu0.24.04.28.0.45-0ubuntu0.24.04.18.0.46-0ubuntu0.24.04.2 |
8.0.46-0ubuntu0.24.04.3 |
mysql-8.4Ubuntu:25.10 From an advisory covering 2 CVEs |
before 8.4.10-0ubuntu0.25.10.1, plus listed versions 8.4.4-0ubuntu28.4.5-0ubuntu18.4.5-0ubuntu28.4.5-0ubuntu38.4.6-0ubuntu1 Show 5 moreShow less8.4.6-0ubuntu38.4.7-0ubuntu0.25.10.28.4.7-0ubuntu0.25.10.38.4.8-0ubuntu0.25.10.18.4.9-0ubuntu0.25.10.1 |
8.4.10-0ubuntu0.25.10.1 |
mysql-8.4Ubuntu:26.04:LTS From an advisory covering 2 CVEs |
before 8.4.10-0ubuntu0.26.04.1, plus listed versions 8.4.6-0ubuntu38.4.7-0ubuntu28.4.7-0ubuntu38.4.8-0ubuntu18.4.9-0ubuntu0.26.04.1 |
8.4.10-0ubuntu0.26.04.1 |
mysql-8.0Ubuntu:Pro:20.04:LTS From an advisory covering 2 CVEs |
before 8.0.46-0ubuntu0.20.04.1+esm3, plus listed versions 8.0.17-0ubuntu28.0.17-0ubuntu38.0.18-0ubuntu38.0.18-0ubuntu48.0.18-0ubuntu5 Show 36 moreShow less8.0.19-0ubuntu28.0.19-0ubuntu38.0.19-0ubuntu48.0.19-0ubuntu58.0.20-0ubuntu0.20.04.18.0.21-0ubuntu0.20.04.38.0.21-0ubuntu0.20.04.48.0.22-0ubuntu0.20.04.28.0.22-0ubuntu0.20.04.38.0.23-0ubuntu0.20.04.18.0.25-0ubuntu0.20.04.18.0.26-0ubuntu0.20.04.28.0.26-0ubuntu0.20.04.38.0.27-0ubuntu0.20.04.18.0.28-0ubuntu0.20.04.38.0.29-0ubuntu0.20.04.28.0.29-0ubuntu0.20.04.38.0.30-0ubuntu0.20.04.28.0.31-0ubuntu0.20.04.18.0.31-0ubuntu0.20.04.28.0.32-0buntu0.20.04.18.0.32-0ubuntu0.20.04.28.0.33-0ubuntu0.20.04.18.0.33-0ubuntu0.20.04.28.0.33-0ubuntu0.20.04.48.0.34-0ubuntu0.20.04.18.0.35-0ubuntu0.20.04.18.0.36-0ubuntu0.20.04.18.0.37-0ubuntu0.20.04.38.0.39-0ubuntu0.20.04.18.0.40-0ubuntu0.20.04.18.0.41-0ubuntu0.20.04.18.0.42-0ubuntu0.20.04.18.0.43-0ubuntu0.20.04.1+esm18.0.45-0ubuntu0.20.04.1+esm28.0.46-0ubuntu0.20.04.1+esm2 |
8.0.46-0ubuntu0.20.04.1+esm3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-46862 is a high vulnerability (CVSS 7.5) in Oracle Mysql Router, published June 16, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 40th percentile. Fixed in mysql-8.0 8.0.46-0ubuntu0.20.04.1+esm3.
References
oracle.com/security-alerts/cspujun2026.html
nvd.nist.gov/vuln/detail/CVE-2026-46862
github.com/advisories/GHSA-658f-6m2q-8572
ubuntu.com/security/CVE-2026-46862
cve.org/CVERecord?id=CVE-2026-46862