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CVE-2021-35596

20
FAUCET Score

CVE-2021-35596 is a denial-of-service vulnerability affecting Oracle MySQL Server versions 8.0.26 and prior, specifically within the error handling component. A high-privileged attacker with network access can exploit this vulnerability to cause a complete and repeatable crash of the MySQL Server. With a CVSS 3.1 Base Score of 4.9 (Medium), the attack requires high privileges but has low attack complexity, focusing solely on availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.0.0, <= 8.0.26CPE matchmatch criteria
cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.9MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.13%
Probability of exploitation in next 30 days
EPSS Percentile
80.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0213 is in the 89th percentile among its peer group of 3,565 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

microsoftpatch availablevia msrc
Product: cm1 mysql 8.0.27-1 on CBL Mariner 1.0Fixed in: 8.0.27-1
microsoftpatch availablevia msrc
Product: cbl2 mysql 8.0.28-1 on CBL Mariner 2.0Fixed in: 8.0.28-1
microsoftpatch availablevia msrc
Product: 18806-16823Fixed in: 8.0.28-1
microsoftpatch availablevia msrc
Product: 18974-16820Fixed in: 8.0.27-1
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: mysql:8.0-8060020220830124159.ad008a3a
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-mysql80-mysql-0:8.0.30-1.el7
View patch

Vendor Advisories (2)

redhatCVE-2021-35596Moderate

mysql: Server: Error Handling unspecified vulnerability (CPU Oct 2021)

Oct 19, 2021
microsoft2021-Oct/CVE-2021-35596Moderate

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Error Handling). Supported versions that are affected are 8.0.26 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Oct 12, 2021

References

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/5MLAXYFLUDC636S46X34USCLDZAOFBM2
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/PRCU3RTIPVKPC3GMC76YW7DJEXUEY6FG
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/XF3ZFPL3JJ26YRUGXLXQZYJBLZV3WC2C
security.netapp.com / advisory/ntap-20211022-0003
Third Party Advisory
oracle.com / security-alerts/cpuoct2021.html
PatchVendor Advisory