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CVE-2016-1321

16
FAUCET Score

CVE-2016-1321 affects Cisco Universal Small Cell devices running firmware R2.12 through R3.5. The vulnerability stems from an image-decryption key stored in flash memory, allowing remote attackers to bypass certificate validation. This medium-severity vulnerability (CVSS 5.8) permits attackers to obtain sensitive firmware image and IP address data via a request to a Cisco server, with no user interaction required. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
r2.12_baseCPE matchmatch criteria
cpe:2.3:o:cisco:universal_small_cell_firmware:r2.12_base:*:*:*:*:*:*:*
r2.13_baseCPE matchmatch criteria
cpe:2.3:o:cisco:universal_small_cell_firmware:r2.13_base:*:*:*:*:*:*:*
r2.14_baseCPE matchmatch criteria
cpe:2.3:o:cisco:universal_small_cell_firmware:r2.14_base:*:*:*:*:*:*:*
r2.15_baseCPE matchmatch criteria
cpe:2.3:o:cisco:universal_small_cell_firmware:r2.15_base:*:*:*:*:*:*:*
r2.16_baseCPE matchmatch criteria
cpe:2.3:o:cisco:universal_small_cell_firmware:r2.16_base:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.92%
Probability of exploitation in next 30 days
EPSS Percentile
56.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0092 is in the 35th percentile among its peer group of 23,723 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, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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-20160212-usc
Vendor Advisory
securitytracker.com / id/1035014