CVE-2025-34049 (GCVE-0-2025-34049)
Vulnerability from cvelistv5 – Published: 2025-06-26 15:52 – Updated: 2026-04-07 14:09 X_Known Exploited VulnerabilityTitle
OptiLink ONT1GEW GPON Remote Code Execution
Summary
An OS command injection vulnerability exists in the OptiLink ONT1GEW GPON router firmware version V2.1.11_X101 Build 1127.190306 and earlier. The router’s web management interface fails to properly sanitize user input in the target_addr parameter of the formTracert and formPing administrative endpoints. An authenticated attacker can inject arbitrary operating system commands, which are executed with root privileges, leading to remote code execution. Successful exploitation enables full compromise of the device. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-04 UTC.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-26 17:36 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/49955 | exploit |
| https://optilinknetwork.com/ | product |
| https://vulncheck.com/advisories/optilink-ont1gew… | third-party-advisory |
| https://packetstorm.news/files/id/162993 | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OptiLink | ONT1GEW GPON |
Affected:
0 , ≤ V2.1.11_X101 Build 1127.190306
(custom)
|
Date Public
2021-06-07 00:00
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 26ef1b58-33af-4cdc-af88-9b039cb73a44
Exploited: Yes
Timestamps
First Seen: 2025-06-26
Asserted: 2025-06-26
Scope
Notes: OptiLink ONT1GEW GPON Remote Code Execution | Affected: OptiLink / ONT1GEW GPON | CVSS: 9.4 (CRITICAL) | EPSS: 0.02431 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | OptiLink ONT1GEW GPON Remote Code Execution |
| Cve Id | CVE-2025-34049 |
| Vendor | OptiLink |
| Ghsa Id | None |
| Product | ONT1GEW GPON |
| Added Date | 2025-06-26T15:52:12.000Z |
| Cvss Score | 9.4 |
| Epss Score | 0.02431 |
| Previous Ids | |
| Cvss Severity | CRITICAL |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.83664 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2025-34049 |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-10-02 09:10 CEST
| Updated: 2026-10-02 09:10 CEST
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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