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UK Cyber Defence
VulnerabilityModified

CVE-2017-3599

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Pluggable Auth).

EXPLOIT ✓HIGH 7.5EPSS 90.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 90.0%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Pluggable Auth). Supported versions that are affected are 5.6.35 and earlier and 5.7.17 and earlier. Easily "exploitable" vulnerability allows unauthenticated 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 3.0 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). NOTE: the previous information is from the April 2017 CPU. Oracle has not commented on third-party claims that this issue is an integer overflow in sql/auth/sql_authentication.cc which allows remote attackers to cause a denial of service via a crafted authentication packet.

CVSS 3.0
7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
90.03% probability · 100th percentile
Public exploits
1 in Exploit-DB · verified · first 1 May 2017
CISA KEV
Not listed
Weakness
CWE-190
Affected
oracle/mysql
Source
secalert_us@oracle.com
EPSS trend
0%48%95%21 September 2026: 83.50%22 September 2026: 89.92%27 October 2026: 90.03%21 September 202627 October 2026

EPSS moved from 83.5% on 21 September 2026 to 90.0% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-41954source ↗MySQL < 5.6.35 / < 5.7.17 - Integer Overflowmultiple · Rodrigo Marcosdos1 May 2017yes

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.