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CVE-2020-1601

21
FAUCET Score

CVE-2020-1601 describes a Denial of Service (DoS) vulnerability in Juniper Networks Junos OS, affecting devices acting as a Path Computation Client (PCC) in a PCEP environment. Malformed PCEP packets can cause the pccd process to crash, leading to a sustained DoS if continuously received. This vulnerability impacts various Junos OS versions across different series, with specific versions listed as vulnerable. The vulnerability has a CVSSv3.1 score of 7.5 (HIGH), indicating a severe impact. It can be exploited remotely over the network (AV:N) with low attack complexity (AC:L), requiring no user interaction (UI:N) or privileges (PR:N), and primarily results in high availability impact (A:H). Currently, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal, suggesting it has not garnered widespread attention.

Impacted Technologies

VendorProductVersion(s)CPE
15.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:15.1:f6-s12:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:15.1:r1:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:15.1:r2:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:15.1:r3:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:15.1:r4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
1.07%
Probability of exploitation in next 30 days
EPSS Percentile
61.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0107 is in the 39th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

junipervendor investigatingvia nvd_reference
View patch

References

kb.juniper.net / JSA10980
Vendor Advisory
prsearch.juniper.net / InfoCenter/index
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