HOMEVULNERABILITIESCVE-2020-8948
HIGH

CVE-2020-8948

CWE-59Published: April 15, 2020· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

The Sierra Wireless Windows Mobile Broadband Driver Packages (MBDP) before build 5043 allows an unprivileged user to overwrite arbitrary files in arbitrary folders using hard links. An unprivileged user could leverage this vulnerability to execute arbitrary code with system privileges.

NVD Source

Technical Analysis

CVE-2020-8948 requires local access, meaning attackers must already have a foothold on the target system.

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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

sierrawireless1 product(s)
mobile broadband driver package
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://danishcyberdefence.dk/blog/sierra_wireless
ADVISORYhttps://source.sierrawireless.com/resources/airlink/software_reference_docs/technical-bulletin/sierra-wireless-technical-bulletin---swi-psa-2020-002-cve-2020-8948/#sthash.ByZB8ifG.dpbs
ADVISORYhttps://danishcyberdefence.dk/blog/sierra_wireless
ADVISORYhttps://source.sierrawireless.com/resources/airlink/software_reference_docs/technical-bulletin/sierra-wireless-technical-bulletin---swi-psa-2020-002-cve-2020-8948/#sthash.ByZB8ifG.dpbs

All References (4)

→
https://danishcyberdefence.dk/blog/sierra_wirelessThird Party Advisory
→
https://source.sierrawireless.com/resources/airlink/software_reference_docs/technical-bulletin/sierra-wireless-technical-bulletin---swi-psa-2020-002-cve-2020-8948/#sthash.ByZB8ifG.dpbsVendor Advisory
→
https://danishcyberdefence.dk/blog/sierra_wirelessThird Party Advisory
→
https://source.sierrawireless.com/resources/airlink/software_reference_docs/technical-bulletin/sierra-wireless-technical-bulletin---swi-psa-2020-002-cve-2020-8948/#sthash.ByZB8ifG.dpbsVendor Advisory

Quick Facts

CVE IDCVE-2020-8948
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-59
CISA KEVNo
Affected1 vendor(s)
PublishedApr 15, 2020

Related CVEs (CWE-59)

CVE-2014-4480
10.0
CVE-2002-2374
10.0
CVE-2024-28185
10.0
CVE-2024-28189
10.0
CVE-2026-44881
9.9
CVE-2026-7374
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-8948 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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