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CVE-2017-10621

17
FAUCET Score

CVE-2017-10621 describes a denial of service vulnerability in the telnetd service of Juniper Networks Junos OS, affecting numerous versions across various releases. This flaw allows remote, unauthenticated attackers to disrupt service. With a CVSS v3 score of 5.3 (Medium), the attack vector is network-based with low complexity, requiring no privileges or user interaction, and resulting in a low impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
12.1x45CPE matchmatch criteria
cpe:2.3:o:juniper:junos:12.1x45:*:*:*:*:*:*:*
12.3x48CPE matchmatch criteria
cpe:2.3:o:juniper:junos:12.3x48:*:*:*:*:*:*:*
14.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:14.1:*:*:*:*:*:*:*
14.1x53CPE matchmatch criteria
cpe:2.3:o:juniper:junos:14.1x53:*:*:*:*:*:*:*
14.2CPE matchmatch criteria
cpe:2.3:o:juniper:junos:14.2:*:*:*:*:*:*:*

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
1.80%
Probability of exploitation in next 30 days
EPSS Percentile
76.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0180 is in the 63rd percentile among its peer group of 23,723 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)

juniperworkaround availablevia nvd_reference
View patch

References

kb.juniper.net / JSA10817
MitigationVendor Advisory