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CVE-2019-0055

24
FAUCET Score

CVE-2019-0055 describes a Denial of Service (DoS) vulnerability in the SIP ALG packet processing service of Juniper Networks Junos OS, affecting various versions on SRX Series devices. An unauthenticated attacker can trigger a flowd process crash and core dump by sending specific valid SIP traffic, leading to a sustained DoS. With a CVSS score of 7.5 (HIGH), this vulnerability is network-exploitable with low attack complexity, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 15.1X49, < 15.1X49-D130CPE match
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
>= 17.3, < 17.3R3CPE match
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
>= 17.4, < 17.4R2CPE match
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
12.3x48CPE matchmatch criteria
cpe:2.3:o:juniper:junos:12.3x48:d10:*:*:*:*:*:*
12.3x48CPE matchmatch criteria
cpe:2.3:o:juniper:junos:12.3x48:d15:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.35%
Probability of exploitation in next 30 days
EPSS Percentile
68.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0135 is in the 49th percentile among its peer group of 51,466 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 / JSA10953
Vendor Advisory
juniper.net / documentation/en_US/junos/topics/topic-map/security-sip-alg.html
Vendor Advisory