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CVE-2020-3364

15
FAUCET Score

CVE-2020-3364 describes a logic error in Cisco IOS XR Software's access control list (ACL) functionality, specifically impacting the standby route processor management interface. This flaw allows unauthenticated, remote attackers to bypass ACLs and reach configured IP addresses on the standby route processor management Gigabit Ethernet Management interface. With a CVSS score of 5.3 (Medium), the vulnerability has a low impact, primarily affecting integrity (I:L), and requires no user interaction or privileges. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
6.7.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.7.1:*:*:*:*:*:*:*
7.0.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:7.0.2:*:*:*:*:*:*:*
7.0.11CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:7.0.11:*:*:*:*:*:*:*
7.0.12CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:7.0.12:*:*:*:*:*:*:*
7.1.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:7.1.1:*:*:*:*:*:*:*

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:L/A:N

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

Exploit Intelligence

EPSS Score
0.91%
Probability of exploitation in next 30 days
EPSS Percentile
56.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0091 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)

ciscoworkaround availablevia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-xracl-zbWSWREt
MitigationVendor Advisory