Medium
Security advisory
Vulnerability in the MySQL Client product of Oracle MySQL (component: C API). Supported versions that are affected are 5.7.32 and prior and 8.0.22 and prior. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Client. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Client. CVSS 3.1 Base Score 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-2011
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:26 UTC · Revision 1
Source evidence
Vulnerability in the MySQL Client product of Oracle MySQL (component: C API). Supported versions that are affected are 5.7.32 and prior and 8.0.22 and prior. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Client. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Client. CVSS 3.1 Base Score 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
osv:CVE-2021-2011
Complete source record
{
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"url": "https://osv.dev/vulnerability/CVE-2021-2011",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-2011",
"summary": "Vulnerability in the MySQL Client product of Oracle MySQL (component: C API). Supported versions that are affected are 5.7.32 and prior and 8.0.22 and prior. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Client. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Client. CVSS 3.1 Base Score 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).",
"evidence": "osv:CVE-2021-2011",
"products": [],
"severity": "medium",
"structured": {
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"aliases": [
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],
"metrics": [
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{
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{
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{
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{
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{
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"versions": [
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"mariadb-10.2.12",
"mariadb-10.1.30",
"mariadb-10.2.11",
"mariadb-10.1.29",
"mariadb-10.2.10",
"mariadb-10.1.28",
"mariadb-10.1.27",
"mariadb-10.1.26",
"mariadb-10.1.25",
"mariadb-10.1.24",
"mariadb-10.1.23",
"mariadb-10.2.5",
"mariadb-10.1.22",
"mariadb-10.1.21",
"mariadb-10.1.20",
"mariadb-10.1.19",
"mariadb-10.1.18",
"mariadb-10.2.2",
"mariadb-10.1.17",
"mariadb-10.1.16",
"mariadb-10.2.1",
"mariadb-10.1.15",
"mariadb-10.1.14",
"mariadb-10.2.0",
"mariadb-10.1.13",
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"mariadb-10.1.5",
"mariadb-10.1.4",
"mariadb-10.1.3",
"mariadb-10.1.2",
"mariadb-10.1.0"
],
"database_specific": {
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"vanir_signatures": [
{
"id": "CVE-2021-2011-054c046b",
"digest": {
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"source": "https://github.com/mariadb/server/commit/e48d775c6f066add457fa8cfb2ebc4d5ff0c7613",
"target": {
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"function": "unpack_fields"
},
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},
{
"id": "CVE-2021-2011-404642c2",
"digest": {
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},
"source": "https://github.com/mariadb/server/commit/e48d775c6f066add457fa8cfb2ebc4d5ff0c7613",
"target": {
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"function": "cli_read_rows"
},
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{
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{
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{
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],
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],
"versions": [
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"mysql-4.0.4",
"mysql-4.0.2",
"mysql-3.23.36",
"mysql-3.23.33",
"mysql-3.23.32",
"mysql-3.23.31",
"mysql-3.23.30-gamma",
"mysql-3.23.28-gamma",
"mysql-3.23.22-beta"
],
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],
"modified": "2026-10-24T14:24:40.041861870Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CS5THZSGI7O2CZO44NWYE57AG2T7NK3K/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T7EAHJPWOOF4D6PEFLXW5IQWRRSZ3HRC/",
"https://security.gentoo.org/glsa/202105-27",
"https://security.netapp.com/advisory/ntap-20210622-0001/",
"https://www.oracle.com/security-alerts/cpujan2021.html"
],
"provider_metadata": {
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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},
"related_cves": [
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 443718,
"published_at": "2021-01-20T15:15:45.923+00:00"
}