Resource leaks in router
Resource leak vulnerability in ASR180x in router allows Resource Leak Exposure. This vulnerability is associated with program files router/sms/sms.c. This issue affects Falcon_Linux、Kestrel、Lapwing_Linux: before v1536.
- Published
- Jul 1, 2025
- Updated
- Jun 17, 2026
- EPSS
- 0.3% · 16th percentile
- CWE
- CWE-404
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Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 21 / 40 · 5.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 5.3
- CNA · ASR
- 5.4
- 0.1 point gap
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| asrmicro | falcon linux | cpe:2.3:o:asrmicro:falcon_linux |
| asrmicro | kestrel | cpe:2.3:o:asrmicro:kestrel |
| asrmicro | lapwing linux | cpe:2.3:o:asrmicro:lapwing_linux |
| asrmicro | asr1803 | cpe:2.3:h:asrmicro:asr1803 |
| asrmicro | asr1806 | cpe:2.3:h:asrmicro:asr1806 |
| asrmicro | asr1901 | cpe:2.3:h:asrmicro:asr1901 |
| asrmicro | asr1903 | cpe:2.3:h:asrmicro:asr1903 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- asrmicro falcon linuxbefore 1536
- asrmicro kestrelbefore 1536
- asrmicro lapwing linuxbefore 1536
Versions reported by the vendor
Affected version ranges reported by the assigning authority (ASR). Independent of NVD's CPE analysis and usually ahead of it.
ASR Falcon_Linux、Kestrel、Lapwing_Linux
- before v1536affected
Same product
asrmicro: all recordsOther highest-scoring records for the same primary product.
- CVE-2025-49492Out-of-bounds write in lte-telephony39Monitor
- CVE-2025-49480Out-of-bounds access in lte-telephony36Monitor
- CVE-2025-49483Resource leaks in tr06921Monitor
- CVE-2025-49482Resource leaks in tr06921Monitor
- CVE-2025-49481Resource leaks in router21Monitor
- CVE-2025-49491Resource leaks in traffic_stat21Monitor
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.
- CVE-2025-494820 days apartResource leaks in tr06921Monitor
- CVE-2025-494830 days apartResource leaks in tr06921Monitor
- CVE-2025-494880 days apartResource leaks in router21Monitor
- CVE-2025-494890 days apartResource leaks in cm21Monitor
- CVE-2025-494910 days apartResource leaks in traffic_stat21Monitor
- CVE-2025-50720 days apartResource leaks in cm21Monitor
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-404 · Improper Resource Shutdown or ReleaseCVSS vector
CVSS:3.1/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.
Attack patterns (CAPEC)
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
Vendor advisories and official records. Exploit/PoC links are deliberately left out.