SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-10240

This session token's value can be brute-forced by an attacker to obtain the corresponding session cookie and hijack the user's session.

HIGH 7.3EPSS 1.03%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.03%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

SolarWinds Serv-U MFT before 15.1.6 HFv1 assigns authenticated users a low-entropy session token that can be included in requests to the application as a URL parameter in lieu of a session cookie. This session token's value can be brute-forced by an attacker to obtain the corresponding session cookie and hijack the user's session.

CVSS 3.0
7.3 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS
1.03% probability · 63th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-331
Affected
solarwinds/serv-u
Source
cve@mitre.org
EPSS trend
0%3%5%27 October 2026: 1.03%27 October 202627 October 2026

EPSS 1.0% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

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