How severe is CVE-2019-0028?

CVE-2019-0028 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-0028 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-0028?

CVE-2019-0028 primarily affects Juniper Junos. In total, 56 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-0028?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-0028 published?

CVE-2019-0028 was published on 2019-04-10 and last updated on 2026-06-17.

CVE-2019-0028

CVE-2019-0028 is a high-severity vulnerability in Juniper Junos with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-404.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-404
Affected product: Juniper Junos
Published: 2019-04-10
Last modified: 2026-06-17

Description

On Junos devices with the BGP graceful restart helper mode enabled or the BGP graceful restart mechanism enabled, a BGP session restart on a remote peer that has the graceful restart mechanism enabled may cause the local routing protocol daemon (RPD) process to crash and restart. By simulating a specific BGP session restart, an attacker can repeatedly crash the RPD process causing prolonged denial of service (DoS). Graceful restart helper mode for BGP is enabled by default. No other Juniper Networks products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS: 16.1 versions prior to 16.1R7; 16.1X65 versions prior to 16.1X65-D48; 16.2 versions prior to 16.2R2-S8; 17.1 versions prior to 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S7, 17.2R3; 17.2X75 versions prior to 17.2X75-D92, 17.2X75-D102, 17.2X75-D110; 17.3 versions prior to 17.3R2-S2, 17.3R3; 17.4 versions prior to 17.4R1-S4, 17.4R2; 18.1 versions prior to 18.1R2. Junos OS releases prior to 16.1R1 are not affected.

Frequently asked questions

What is CVE-2019-0028?: On Junos devices with the BGP graceful restart helper mode enabled or the BGP graceful restart mechanism enabled, a BGP session restart on a remote peer that has the graceful restart mechanism enabled may cause the local routing protocol daemon (RPD) process to crash and restart. By simulating a specific BGP session restart, an attacker can repeatedly crash the RPD process causing prolonged denial of service (DoS). Graceful restart helper mode for BGP is enabled by default. No other Juniper Networks products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS: 16.1 versions prior to 16.1R7; 16.1X65 versions prior to 16.1X65-D48; 16.2 versions prior to 16.2R2-S8; 17.1 versions prior to 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S7, 17.2R3; 17.2X75 versions prior to 17.2X75-D92, 17.2X75-D102, 17.2X75-D110; 17.3 versions prior to 17.3R2-S2, 17.3R3; 17.4 versions prior to 17.4R1-S4, 17.4R2; 18.1 versions prior to 18.1R2. Junos OS releases prior to 16.1R1 are not affected.
How severe is CVE-2019-0028?: CVE-2019-0028 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-0028 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-0028?: CVE-2019-0028 primarily affects Juniper Junos. In total, 56 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-0028?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-0028 published?: CVE-2019-0028 was published on 2019-04-10 and last updated on 2026-06-17.

References

Affected products (56)

cpe:2.3:o:juniper:junos:16.1:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1:r3-s10:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1:r4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1:r5-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1:r6-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1:r7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1x65:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1x65:d30:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1x65:d35:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.1x65:d40:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:r2-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:r2-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:r2-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:16.2:r2-s8:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.1:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.1:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.1:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.1:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.1:r2-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.1:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.1:r2-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.1:r2-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.1r3:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.2:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.2:r1-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.2:r1-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.2:r1-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.2:r1-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.2:r1-s7:*:*:*:*:*:*

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