The COM_CHANGE_USER command in MySQL 3.x before 3.23.54, and 4.x before 4.0.6, allows remote attackers to gain privileges via a brute force
The COM_CHANGE_USER command in MySQL 3.x before 3.23.54, and 4.x before 4.0.6, allows remote attackers to gain privileges via a brute force attack using a one-character password, which causes MySQL to only compare the provided password against the first character of the real password.
- Published
- Dec 23, 2002
- Updated
- Jun 16, 2026
- EPSS
- 20.5% · 97th percentile
- CWE
- —
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Report tools
Action score
36
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 6 / 30 · 20.5%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| oracle | mysql | cpe:2.3:a:oracle:mysql |
| symantec veritas | netbackup advanced reporter | cpe:2.3:a:symantec_veritas:netbackup_advanced_reporter |
| symantec veritas | netbackup global data manager | cpe:2.3:a:symantec_veritas:netbackup_global_data_manager |
Using mysql? Add it to your stack and be the first to know about CVEs like this one. (MySQL)
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- oracle mysql3.22.26
- oracle mysql3.22.27
- oracle mysql3.22.28
- oracle mysql3.22.29
- oracle mysql3.22.30
- oracle mysql3.22.32
- oracle mysql3.23.10
- oracle mysql3.23.2
- oracle mysql3.23.23
- oracle mysql3.23.24
- oracle mysql3.23.25
- oracle mysql3.23.26
- oracle mysql3.23.27
- oracle mysql3.23.28
- oracle mysql3.23.29
- oracle mysql3.23.3
- oracle mysql3.23.30
- oracle mysql3.23.31
- oracle mysql3.23.34
- oracle mysql3.23.36
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:3.0 | mysql | before 3.23.49-8.2 | 3.23.49-8.2 |
Same product
oracle: all recordsOther highest-scoring records for the same primary product.
- CVE-2016-6662Oracle MySQL through 5.5.52, 5.6.x through 5.6.33, and 5.7.x through 5.7.15; MariaDB before 5.5.51, 10.0.x before 10.0.27, and 10.1.x before59Plan
- CVE-2017-3599Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Pluggable Auth).57Plan
- CVE-2009-4484Multiple stack-based buffer overflows in the CertDecoder::GetName function in src/asn.cpp in TaoCrypt in yaSSL before 1.9.9, as used in mysq51Plan
- CVE-2022-21489Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: General).49Plan
- CVE-2022-21279Vulnerability in the MySQL Cluster product of Oracle MySQL (component: Cluster: General).49Plan
- CVE-2012-2122sql/password.c in Oracle MySQL 5.1.x before 5.1.63, 5.5.x before 5.5.24, and 5.6.x before 5.6.6, and MariaDB 5.1.x before 5.1.62, 5.2.x befo49Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:mysql | 3.23.49-8.2 · Debian:3.0 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | remote | 2002-12-16 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoC-7 d
- Published
- TodaySep 30, 2026+8682 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- P · data can be read
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
—
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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References
- distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000555
- marc.info/?l=bugtraq&m=103971644013961&w=2
- marc.info/?l=bugtraq&m=104004857201968&w=2
- marc.info/?l=bugtraq&m=104005886114500&w=2
- security.e-matters.de/advisories/042002.html
- www.debian.org/security/2002/dsa-212
- www.linuxsecurity.com/advisories/engarde_advisory-2660.html
- www.mandrakesoft.com/security/advisories?name=MDKSA-2002:087
- www.novell.com/linux/security/advisories/2003_003_mysql.html
- www.redhat.com/support/errata/RHSA-2002-288.html
- www.redhat.com/support/errata/RHSA-2002-289.html
- www.redhat.com/support/errata/RHSA-2003-166.html
- www.securityfocus.com/advisories/5269
- www.trustix.net/errata/misc/2002/TSL-2002-0086-mysql.asc.txt
- exchange.xforce.ibmcloud.com/vulnerabilities/10847
Vendor advisories and official records. Exploit/PoC links are deliberately left out.