CVE-2013-4687
CVE-2013-4687 is a high-severity vulnerability in Juniper Junos with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 2.0 base score 7.8)
- EPSS exploit prediction: 3% (84th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Juniper Junos
- Published:
- Last modified:
Description
flowd in Juniper Junos 10.4 before 10.4S14, 11.2 and 11.4 before 11.4R6-S2, and 12.1 before 12.1R6 on SRX devices, when certain Application Layer Gateways (ALGs) are enabled, allows remote attackers to cause a denial of service (daemon crash) via crafted TCP packets, aka PRs 727980, 806269, and 835593.
Frequently asked questions
- What is CVE-2013-4687?
- flowd in Juniper Junos 10.4 before 10.4S14, 11.2 and 11.4 before 11.4R6-S2, and 12.1 before 12.1R6 on SRX devices, when certain Application Layer Gateways (ALGs) are enabled, allows remote attackers to cause a denial of service (daemon crash) via crafted TCP packets, aka PRs 727980, 806269, and 835593.
- How severe is CVE-2013-4687?
- CVE-2013-4687 has a CVSS 2.0 base score of 7.8, rated high severity.
- Is CVE-2013-4687 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2013-4687?
- CVE-2013-4687 primarily affects Juniper Junos. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2013-4687?
- 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-2013-4687 published?
- CVE-2013-4687 was published on 2013-07-11 and last updated on 2026-06-16.
References
Affected products (16)
- cpe:2.3:o:juniper:junos:10.4:*:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:11.2:*:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:11.4:*:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:12.1:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx100:-:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx110:-:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx1400:-:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx210:-:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx220:-:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx240:-:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx3400:-:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx3600:-:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx550:-:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:*
- cpe:2.3:h:juniper:srx650:-:*:*:*:*:*:*:*
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