CVE-2023-1697 | Junos OS: QFX10000 Series, PTX1000 Series: The dcpfe process will crash when a malformed ethernet frame is received

An Improper Handling of Missing Values vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker to cause a dcpfe process core and thereby a Denial of Service (DoS). Continued receipt of these specific frames will cause a sustained Denial of Service condition. This issue occurs when a specific malformed ethernet frame is received. This issue affects Juniper Networks Junos OS on QFX10000 Series, PTX1000 Series Series: All versions prior to 19.4R3-S10; 20.1 version 20.1R1 and later versions; 20.2 versions prior to 20.2R3-S6; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3-S1; 22.1 versions prior to 22.1R2-S1, 22.1R3; 22.2 versions prior to 22.2R1-S2, 22.2R2.

Published: 2023-04-17 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-1697 is rated Low Risk (34.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.32%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-1697

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.12% 0.32% +0.20%
2 2026-06-14 0.28% 0.12% -0.16%
3 2026-05-01 — 0.28% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-1697

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2023-1697

Affected software / configurations for CVE-2023-1697

Vendor Product Version Raw CPE
juniper junos < 19.4 cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:-:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r1-s3:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r1-s4:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r2-s3:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r2-s4:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r2-s5:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r2-s6:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r2-s7:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r3-s1:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r3-s2:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r3-s3:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r3-s4:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r3-s5:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r3-s6:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r3-s7:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r3-s8:*:*:*:*:*:*
juniper junos 19.4 cpe:2.3:o:juniper:junos:19.4:r3-s9:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:-:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r2:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r2-s1:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r2-s2:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r3:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r3-s1:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r3-s2:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r3-s3:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r3-s4:*:*:*:*:*:*
juniper junos 20.1 cpe:2.3:o:juniper:junos:20.1:r3-s5:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:-:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r2-s2:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r2-s3:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r3:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r3-s1:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r3-s2:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r3-s3:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r3-s4:*:*:*:*:*:*
juniper junos 20.2 cpe:2.3:o:juniper:junos:20.2:r3-s5:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:-:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:r1-s2:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:r2:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:r2-s1:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:r3:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:r3-s1:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:r3-s2:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:r3-s3:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:r3-s4:*:*:*:*:*:*
juniper junos 20.3 cpe:2.3:o:juniper:junos:20.3:r3-s5:*:*:*:*:*:*
juniper junos 20.4 cpe:2.3:o:juniper:junos:20.4:-:*:*:*:*:*:*
juniper junos 20.4 cpe:2.3:o:juniper:junos:20.4:r1:*:*:*:*:*:*
juniper junos 20.4 cpe:2.3:o:juniper:junos:20.4:r1-s1:*:*:*:*:*:*
juniper junos 20.4 cpe:2.3:o:juniper:junos:20.4:r2:*:*:*:*:*:*
juniper junos 20.4 cpe:2.3:o:juniper:junos:20.4:r2-s1:*:*:*:*:*:*
juniper junos 20.4 cpe:2.3:o:juniper:junos:20.4:r2-s2:*:*:*:*:*:*
juniper junos 20.4 cpe:2.3:o:juniper:junos:20.4:r3:*:*:*:*:*:*
juniper junos 20.4 cpe:2.3:o:juniper:junos:20.4:r3-s1:*:*:*:*:*:*
juniper junos 20.4 cpe:2.3:o:juniper:junos:20.4:r3-s2:*:*:*:*:*:*
juniper junos 20.4 cpe:2.3:o:juniper:junos:20.4:r3-s3:*:*:*:*:*:*
juniper junos 20.4 cpe:2.3:o:juniper:junos:20.4:r3-s4:*:*:*:*:*:*
juniper junos 21.1 cpe:2.3:o:juniper:junos:21.1:-:*:*:*:*:*:*
juniper junos 21.1 cpe:2.3:o:juniper:junos:21.1:r1:*:*:*:*:*:*

References for CVE-2023-1697

cvelogic Threat Intelligence