An IKE Packet Parsing Denial of Service Vulnerability in the ipsecmgr process of Cisco ASR 5000 Software could allow an unauthenticated, rem
An IKE Packet Parsing Denial of Service Vulnerability in the ipsecmgr process of Cisco ASR 5000 Software could allow an unauthenticated, remote attacker to cause the ipsecmgr process to reload. More Information: CSCuy06917 CSCuy45036 CSCuy59525. Known Affected Releases: 20.0.0 20.0.M0.62842 20.0.v0 20.0.M0.63229 20.1.0 20.1.a0 20.1.v0 21.0.0 21.0.v0. Known Fixed Releases: 20.0.0 20.0.0.63250 20.0.M0.63148 20.0.R0.63294 20.0.R0.63316 20.0.V0.63170 20.0.VG0.63188 20.0.v0 20.0.v0.64175 20.0.vg0.63522 20.1.A0.63166 20.2.A0.63174 20.1.A0.63232 20.2.A0.63237 20.0.M0.63226 20.0.M0.63229 20.0.R0.63294 20.0.R0.63316 20.0.V0.63263 20.0.VG0.63233 20.0.v0 20.0.v0.64175 20.0.vg0.63522 20.1.0 20.1.0.63959 20.1.M0.63876 20.1.T0.63886 20.1.V0.64231 20.1.VA0.64194 20.1.VB0.64210 20.1.a0 20.1.a0.64023 20.1.v0 20.1.v0.64607 20.2.A0.63895 21.0.0 21.0.0.65256 21.0.M0.63881 21.0.M0.64281 21.0.PP0.64366 21.0.V0.65052 21.0.v0 21.0.v0.65831 21.0.vb0.65887 21.1.R0.65130 21.1.R0.65135.
- Published
- Jan 26, 2017
- Updated
- Jun 16, 2026
- EPSS
- 2.9% · 87th percentile
- CWE
- CWE-399
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 21 / 40 · 5.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.9%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| cisco | asr 5000 series software | cpe:2.3:a:cisco:asr_5000_series_software |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- cisco asr 5000 series software20.0.0
- cisco asr 5000 series software20.0.1.0
- cisco asr 5000 series software20.0.1.a0
- cisco asr 5000 series software20.0.1.v0
- cisco asr 5000 series software20.0.m0.62842
- cisco asr 5000 series software20.0.m0.63229
- cisco asr 5000 series software20.0.v0
- cisco asr 5000 series software21.0.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (cisco). Independent of NVD's CPE analysis and usually ahead of it.
n/a Cisco ASR 5000 Software
- Cisco ASR 5000 Softwareaffected
Same product
cisco: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-3819A privilege escalation vulnerability in the Secure Shell (SSH) subsystem in the StarOS operating system for Cisco ASR 5000 Series, ASR 5500 36Monitor
- CVE-2017-6612A vulnerability in the gateway GPRS support node (GGSN) of Cisco ASR 5000 Series Aggregation Services Routers 17.3.9.62033 through 21.1.2 co35Monitor
- CVE-2017-6672A vulnerability in certain filtering mechanisms of access control lists (ACLs) for Cisco ASR 5000 Series Aggregation Services Routers throug31Monitor
- CVE-2016-9203A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco ASR 5000 Series Software could allow an unauthenticated, rem31Monitor
- CVE-2016-6467A vulnerability in IPv6 packet fragment reassembly of StarOS for Cisco Aggregation Services Router (ASR) 5000 Series Switch could allow an u31Monitor
- CVE-2016-6466A vulnerability in the IPsec component of StarOS for Cisco ASR 5000 Series routers could allow an unauthenticated, remote attacker to termin31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- low · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- Low
Weakness class (CWE)
CWE-399 · Resource Management ErrorsCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.securityfocus.com/bid/95629
- www.securitytracker.com/id/1037652
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170118-asr
Vendor advisories and official records. Exploit/PoC links are deliberately left out.