A vulnerability in the upgrade process of Cisco Spark Board could allow an authenticated, local attacker to install an unverified upgrade p…

Published 8 y ago 2017-11-16 · modified 4 mo ago 2026-06-17 · JSON

CVSS

4.4

v3.0 · NVD

CISA KEV

not known exploited

EPSS

0.2%

percentile 9%

Public exploits

none known

A vulnerability in the upgrade process of Cisco Spark Board could allow an authenticated, local attacker to install an unverified upgrade package, aka Signature Verification Bypass. The vulnerability is due to insufficient upgrade package validation. An attacker could exploit this vulnerability by providing the upgrade process with an upgrade package that the attacker controls. An exploit could allow the attacker to install custom firmware to the Spark Board. Cisco Bug IDs: CSCvf84502.

Exploit prediction (EPSS)

0.19% probability of exploitation in the next 30 days, higher than 9% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	4.4	`CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N`
NVD	2.0	2.1	`AV:L/AC:L/Au:N/C:N/I:P/A:N`

Affected products

n/a Cisco Spark Board

Classification

Weakness

CWE-16 Configuration
CWE-494 Download of Code Without Integrity Check

References

securityfocus.com /bid/101914 · vdb-entry, x_refsource_BID, x_transferred
tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-spark · x_refsource_CONFIRM, x_transferred

Sources

CVE List: CVE-2017-12306
NVD: CVE-2017-12306

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.