CVE-2020-0638

Microsoft Update Notification Manager: Privilege Escalation

As of , CVE-2020-0638 in Microsoft Update Notification Manager is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 23 May 2022
US federal deadline
13 June 202221 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Known
EPSS score
0.02Higher than 83% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.01 on 23 May 2022EPSS on the day CISA listed it.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Microsoft Update Notification Manager contains an unspecified vulnerability that allows for privilege escalation.

CISA's description

An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Update Notification Manager Elevation of Privilege Vulnerability'.

The CVE record's description, from microsoft

CVE published
14 January 2020
Assigned by
microsoft
CVSS
7.8 High (CVSS 3.1, from CISA-ADP)
CWE-59
Improper Link Resolution Before File Access ('Link Following')
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

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