HOMEVULNERABILITIESCVE-2020-13863
HIGH

CVE-2020-13863

CWE-74Published: August 26, 2020· Updated: Jun 17, 2026

8.1
CVSS v3.1

Official Description

The SAS portal of Mitel MiCollab before 9.1.3 could allow an attacker to access user data by performing a header injection in HTTP responses, due to the improper handling of input parameters. A successful exploit could allow an attacker to access user information.

NVD Source

Technical Analysis

CVE-2020-13863 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected Vendors & Products

mitel1 product(s)
micollab
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.mitel.com/support/security-advisories
ADVISORYhttps://www.mitel.com/support/security-advisories/mitel-product-security-advisory-20-0008
ADVISORYhttps://www.mitel.com/support/security-advisories
ADVISORYhttps://www.mitel.com/support/security-advisories/mitel-product-security-advisory-20-0008

All References (4)

→
https://www.mitel.com/support/security-advisoriesVendor Advisory
→
https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-20-0008Vendor Advisory
→
https://www.mitel.com/support/security-advisoriesVendor Advisory
→
https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-20-0008Vendor Advisory

Quick Facts

CVE IDCVE-2020-13863
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-74
CISA KEVNo
Affected1 vendor(s)
PublishedAug 26, 2020

Related CVEs (CWE-74)

CVE-2023-1523
10.0
CVE-2014-8423
10.0
CVE-2020-26282
10.0
CVE-2026-56699
10.0
CVE-2023-30547
10.0
CVE-2026-44182
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-13863 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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