CVE-2024-47503
Junos OS: SRX4600 and SRX5000 Series: Sequence of specific PIM packets causes a flowd crash
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX4600 and SRX5000 Series allows an unauthenticated and logically adjacent attacker to cause a Denial-of-Service (DoS).
If in a multicast scenario a sequence of
specific PIM packets is received, this will cause a flowd crash and restart, which leads to momentary service interruption. This issue affects Junos OS on SRX 4600 and SRX 5000 Series:
- All versions before 21.4R3-S9,
- 22.2 versions before 22.2R3-S5,
- 22.3 versions before 22.3R3-S4,
- 22.4 versions before 22.4R3-S4,
- 23.2 versions before 23.2R2-S2,
- 23.4 versions before 23.4R2,
- 24.2 versions before 24.2R1-S1, 24.2R2.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Junos OS: SRX4600 and SRX5000 Series: Sequence of specific PIM packets causes a flowd crash
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX4600 and SRX5000 Series allows an unauthenticated and logically adjacent attacker to cause a Denial-of-Service (DoS).
If in a multicast scenario a sequence of
specific PIM packets is received, this will cause a flowd crash and restart, which leads to momentary service interruption. This issue affects Junos OS on SRX 4600 and SRX 5000 Series:
- All versions before 21.4R3-S9,
- 22.2 versions before 22.2R3-S5,
- 22.3 versions before 22.3R3-S4,
- 22.4 versions before 22.4R3-S4,
- 23.2 versions before 23.2R2-S2,
- 23.4 versions before 23.4R2,
- 24.2 versions before 24.2R1-S1, 24.2R2.
- Record
CVE-2024-47503- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-754
- Updated
- 2026-11-02
EUVDEUVD-2024-42506
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX4600 and SRX5000 Series allows an unauthenticated and logically adjacent attacker to cause a Denial-of-Service (DoS).
If in a multicast scenario a sequence of
specific PIM packets is received, this will cause a flowd crash and restart, which leads to momentary service interruption. This issue affects Junos OS on SRX 4600 and SRX 5000 Series:
- All versions before 21.4R3-S9,
- 22.2 versions before 22.2R3-S5,
- 22.3 versions before 22.3R3-S4,
- 22.4 versions before 22.4R3-S4,
- 23.2 versions before 23.2R2-S2,
- 23.4 versions before 23.4R2,
- 24.2 versions before 24.2R1-S1, 24.2R2.
- Record
EUVD-2024-42506- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8c3g-6qh9-4p9q
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing...
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX4600 and SRX5000 Series allows an unauthenticated and logically adjacent attacker to cause a Denial-of-Service (DoS).
If in a multicast scenario a sequence of
specific PIM packets is received, this will cause a flowd crash and restart, which leads to momentary service interruption. This issue affects Junos OS on SRX 4600 and SRX 5000 Series:
- All versions before 21.4R3-S9,
- 22.2 versions before 22.2R3-S5,
- 22.3 versions before 22.3R3-S4,
- 22.4 versions before 22.4R3-S4,
- 23.2 versions before 23.2R2-S2,
- 23.4 versions before 23.4R2,
- 24.2 versions before 24.2R1-S1, 24.2R2.
- Record
GHSA-8c3g-6qh9-4p9q- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:M/U:X - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-754
- Updated
- 2026-11-02
NVD
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX4600 and SRX5000 Series allows an unauthenticated and logically adjacent attacker to cause a Denial-of-Service (DoS).
If in a multicast scenario a sequence of
specific PIM packets is received, this will cause a flowd crash and restart, which leads to momentary service interruption. This issue affects Junos OS on SRX 4600 and SRX 5000 Series:
- All versions before 21.4R3-S9,
- 22.2 versions before 22.2R3-S5,
- 22.3 versions before 22.3R3-S4,
- 22.4 versions before 22.4R3-S4,
- 23.2 versions before 23.2R2-S2,
- 23.4 versions before 23.4R2,
- 24.2 versions before 24.2R1-S1, 24.2R2.
- Record
CVE-2024-47503- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:M/U:X - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-754
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-47503 is a high vulnerability (CVSS 7.1) in Juniper Junos, published October 11, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.33%, the 27th percentile. No source names a fixed version.