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CVE-2017-12219

20
FAUCET Score

CVE-2017-12219 describes a denial-of-service vulnerability affecting Cisco Small Business SPA300, SPA500, and SPA51x Series IP Phones. This flaw stems from the devices' inability to properly handle a high volume of large IP fragments, leading to unexpected reloads. Rated 7.5 HIGH on the CVSS scale, it is easily exploitable by an unauthenticated, remote attacker sending crafted IP fragments, resulting in a complete loss of service. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
7.6.2CPE matchmatch criteria
cpe:2.3:o:cisco:spa_301_firmware:7.6.2:*:*:*:*:*:*:*
7.6.2CPE matchmatch criteria
cpe:2.3:o:cisco:spa_303_firmware:7.6.2:*:*:*:*:*:*:*
7.6.2CPE matchmatch criteria
cpe:2.3:o:cisco:spa_500ds_firmware:7.6.2:*:*:*:*:*:*:*
7.6.2CPE matchmatch criteria
cpe:2.3:o:cisco:spa_500s_firmware:7.6.2:*:*:*:*:*:*:*
7.6.2CPE matchmatch criteria
cpe:2.3:o:cisco:spa_501g_firmware:7.6.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.66%
Probability of exploitation in next 30 days
EPSS Percentile
84.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0266 is in the 72nd percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20170920-spa
Vendor Advisory
securityfocus.com / bid/100926
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039413
Third Party AdvisoryVDB Entry