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CVE-2017-6599

21
FAUCET Score

CVE-2017-6599 describes a memory leak vulnerability in Cisco IOS XR Software when gRPC is enabled, affecting the Event Management Service daemon (emsd). An unauthenticated, remote attacker can exploit this to cause a denial of service (DoS) by crashing the emsd process. With a CVSS score of 5.3 (Medium), it requires no user interaction and has low impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
6.1.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.1.1:*:*:*:*:*:*:*
6.2.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xr:6.2.1:*:*:*:*:*:*:*

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
2.04%
Probability of exploitation in next 30 days
EPSS Percentile
79.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0204 is in the 68th percentile among its peer group of 23,703 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-20170405-ios
Vendor Advisory
securityfocus.com / bid/97464
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038191