CVE-2024-39545
Junos OS: SRX Series, MX Series with SPC3 and NFX350: When VPN tunnels parameters are not configured in specific way the iked process will crash
An Improper Check for Unusual or Exceptional Conditions vulnerability in the the IKE daemon (iked) of Juniper Networks Junos OS on SRX Series, MX Series with SPC3 and NFX350 allows allows an unauthenticated, network-based attacker sending specific mismatching parameters as part of the IPsec negotiation to trigger an iked crash leading to Denial of Service (DoS).
This issue is applicable to all platforms that run iked. This issue affects Junos OS on SRX Series, MX Series with SPC3 and NFX350:
- All versions before 21.2R3-S8,
- from 21.4 before 21.4R3-S7,
- from 22.1 before 22.1R3-S2,
- from 22.2 before 22.2R3-S1,
- from 22.3 before 22.3R2-S1, 22.3R3,
- from 22.4 before 22.4R1-S2, 22.4R2, 22.4R3.
Attack profile
How easy it is to exploit
- Attack vector
- 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: SRX Series, MX Series with SPC3 and NFX350: When VPN tunnels parameters are not configured in specific way the iked process will crash
An Improper Check for Unusual or Exceptional Conditions vulnerability in the the IKE daemon (iked) of Juniper Networks Junos OS on SRX Series, MX Series with SPC3 and NFX350 allows allows an unauthenticated, network-based attacker sending specific mismatching parameters as part of the IPsec negotiation to trigger an iked crash leading to Denial of Service (DoS).
This issue is applicable to all platforms that run iked. This issue affects Junos OS on SRX Series, MX Series with SPC3 and NFX350:
- All versions before 21.2R3-S8,
- from 21.4 before 21.4R3-S7,
- from 22.1 before 22.1R3-S2,
- from 22.2 before 22.2R3-S1,
- from 22.3 before 22.3R2-S1, 22.3R3,
- from 22.4 before 22.4R1-S2, 22.4R2, 22.4R3.
- Record
CVE-2024-39545- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-754
- Updated
- 2026-11-02
EUVDEUVD-2024-38071
An Improper Check for Unusual or Exceptional Conditions vulnerability in the the IKE daemon (iked) of Juniper Networks Junos OS on SRX Series, MX Series with SPC3 and NFX350 allows allows an unauthenticated, network-based attacker sending specific mismatching parameters as part of the IPsec negotiation to trigger an iked crash leading to Denial of Service (DoS).
This issue is applicable to all platforms that run iked. This issue affects Junos OS on SRX Series, MX Series with SPC3 and NFX350:
- All versions before 21.2R3-S8,
- from 21.4 before 21.4R3-S7,
- from 22.1 before 22.1R3-S2,
- from 22.2 before 22.2R3-S1,
- from 22.3 before 22.3R2-S1, 22.3R3,
- from 22.4 before 22.4R1-S2, 22.4R2, 22.4R3.
- Record
EUVD-2024-38071- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mhxw-prxv-h6hr
An Improper Check for Unusual or Exceptional Conditions vulnerability in the the IKE daemon (iked...
An Improper Check for Unusual or Exceptional Conditions vulnerability in the the IKE daemon (iked) of Juniper Networks Junos OS on SRX Series, MX Series with SPC3 and NFX350 allows allows an unauthenticated, network-based attacker sending specific mismatching parameters as part of the IPsec negotiation to trigger an iked crash leading to Denial of Service (DoS).
This issue is applicable to all platforms that run iked. This issue affects Junos OS on SRX Series, MX Series with SPC3 and NFX350:
- All versions before 21.2R3-S8,
- from 21.4 before 21.4R3-S7,
- from 22.1 before 22.1R3-S2,
- from 22.2 before 22.2R3-S1,
- from 22.3 before 22.3R2-S1, 22.3R3,
- from 22.4 before 22.4R1-S2, 22.4R2, 22.4R3.
- Record
GHSA-mhxw-prxv-h6hr- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/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:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/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 the IKE daemon (iked) of Juniper Networks Junos OS on SRX Series, MX Series with SPC3 and NFX350 allows allows an unauthenticated, network-based attacker sending specific mismatching parameters as part of the IPsec negotiation to trigger an iked crash leading to Denial of Service (DoS).
This issue is applicable to all platforms that run iked. This issue affects Junos OS on SRX Series, MX Series with SPC3 and NFX350:
- All versions before 21.2R3-S8,
- from 21.4 before 21.4R3-S7,
- from 22.1 before 22.1R3-S2,
- from 22.2 before 22.2R3-S1,
- from 22.3 before 22.3R2-S1, 22.3R3,
- from 22.4 before 22.4R1-S2, 22.4R2, 22.4R3.
- Record
CVE-2024-39545- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/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:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/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-2024-39545 is a high vulnerability (CVSS 8.7) in Juniper Junos, published July 11, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.49%, the 42nd percentile. No source names a fixed version.