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CVE-2016-1376

19
FAUCET Score

CVE-2016-1376 is a denial-of-service vulnerability affecting Cisco IOS XR versions 4.2.3, 4.3.0, 4.3.4, and 5.3.1 on ASR 9000 devices. Remote attackers can exploit this by sending crafted bit patterns in packets, leading to CRC and symbol errors and interface flap. With a CVSS score of 5.3 (Medium), this vulnerability is easily exploitable over the network with low attack complexity, potentially causing service disruption. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.2.3CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:4.2.3:*:*:*:*:*:*:*
4.3.0CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:4.3.0:*:*:*:*:*:*:*
4.3.4CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:4.3.4:*:*:*:*:*:*:*
5.3.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:5.3.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

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

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

Exploit Intelligence

EPSS Score
1.74%
Probability of exploitation in next 30 days
EPSS Percentile
75.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0174 is in the 61st percentile among its peer group of 23,701 CVEs.

Social Chatter

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-20160412-asr
Vendor Advisory
securitytracker.com / id/1035560