VulnerabilityPublished 15 Sep 2025Updated 11 Mar 2026

CVE-2025-57176: Ceragon Networks / Siklu Communication EtherHaul and MultiHaul Series microwave antennas · Unrestricted File Upload

Affects Ceragon Networks / Siklu Communication EtherHaul and MultiHaul Series microwave antennasSource CVE Database V5

Not known to be exploited · public exploit available (Exploit-DB) · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 09:15 UTC

CVSS 3.1 base score

6.5Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 34% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

Disclosed: evidence found.
CVE published 15 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
1 Exploit-DB entry, 124 days after disclosure
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

CVE ID reserved
by MITRE Corporation
17 Aug 2025, 29 days before disclosure
CVE published
on cve.org
15 Sep 2025, t = 0
In Threat Radar
record ingested
15 Sep 202517:02 UTC, the same day as disclosure
First Exploit-DB entry (opens in a new tab)
Siklu EtherHaul Series EH-8010 - Arbitrary File Upload
17 Jan 2026, 124 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

AI-suggested

1. Immediately restrict network access to TCP port 555 on all affected devices using firewalls, access control lists, or network segmentation to limit exposure to trusted management networks only. 2. Monitor network traffic for unusual file upload attempts or connections to port 555 from unauthorized sources. 3. Implement strong encryption and authentication controls at the network perimeter to prevent unauthorized access to device management interfaces. 4. Coordinate with Ceragon Networks / Siklu Communication for official patches or firmware updates addressing this vulnerability and apply them promptly once available. 5. Conduct thorough audits of device file systems to detect and remove any unauthorized or suspicious files. 6. Employ intrusion detection/prevention systems (IDS/IPS) tuned to detect exploitation attempts targeting this vulnerability. 7. Review and harden device configurations to disable unnecessary services or restrict writable directories where possible. 8. Establish incident response procedures specifically for microwave antenna infrastructure to quickly respond to potential compromises.

Description

On Ceragon Networks / Siklu Communication EtherHaul and MultiHaul Series microwave antennas before 2026-03-10, the rfpiped service on TCP port 555 allows unauthenticated file uploads to any writable location on the device. File upload packets use weak encryption (metadata only) with file contents transmitted in cleartext. No authentication or path validation is performed.

Impact

The vulnerability allows unauthenticated remote attackers to upload arbitrary files to critical microwave antenna devices, potentially leading to several adverse impacts. Confidentiality is at risk because file contents are transmitted in cleartext and can be intercepted, and attackers can upload malicious files that may exfiltrate sensitive data. Integrity is compromised as attackers can overwrite or add files, potentially injecting malicious code or altering device configurations. Although availability is not directly impacted, successful exploitation could lead to device instability or indirect denial of service through malicious payloads. Given that these devices are often part of critical telecommunications infrastructure, exploitation could disrupt network communications, degrade service quality, or facilitate further attacks within the network. The ease of exploitation (no authentication or user interaction required) increases the likelihood of attacks, especially in environments where port 555 is exposed or insufficiently protected. The broad range of affected models means many organizations worldwide could be vulnerable, particularly telecom operators and enterprises relying on these microwave links for backhaul connectivity.

CWE-434Unrestricted Upload of File with Dangerous Type (opens in a new tab)
Base weaknessLikelihood of exploit: MediumCWE Top 25 (2025): #12OWASP Top 10 A06:2025: Insecure Design (opens in a new tab)
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
Architecture and Design
Generate a new, unique filename for an uploaded file instead of using the user-supplied filename, so that no external input is used at all.
Architecture and Design · Enforcement by Conversion
When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
Architecture and Design
Consider storing the uploaded files outside of the web document root entirely. Then, use other mechanisms to deliver the files dynamically.
OWASP Cheat Sheets
Server Side Request Forgery Prevention (opens in a new tab)
Web Service Security (opens in a new tab)
Third Party Javascript Management (opens in a new tab)
File Upload (opens in a new tab)
Secure Design Principles (opens in a new tab)
OWASP ASVS 4.0.3
V12.5.2 (opens in a new tab)
V13.1.5 (opens in a new tab)
V12.2.1 (opens in a new tab)
Attack patterns
Accessing Functionality Not Properly Constrained by ACLs (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

cisa.gov/news-events/ics-advisories/icsa-26-069-04 (opens in a new tab)

Community reviews

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Exploitation evidence

Timeline

What to do

Description

AI analysisMachine-generated, updated 11 Mar 2026, 19:09 UTC

Public exploits and detection1 Exploit-DB entry

WeaknessesCWE-434

Technical details

References

Community reviews

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