CVE-2025-47150VulnerabilityPublished 15 Oct 2025Updated 26 Feb 2026

CVE-2025-47150: F5 F5OS – Appliance · Memory Leak

Affects F5 F5OS – ApplianceSource CVE Database V5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

6.5Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 31% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

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

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: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
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: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
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

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 2026-10-25.

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

Affected software

Product	Affected	Fixed in
F5 F5OS - Appliance	Affected =1.8.0 =1.5.0	Fixed in–

AI-suggested

To mitigate CVE-2025-47150, organizations should first identify if their F5OS Appliances are running affected versions (1.5.0 or 1.8.0) with SNMP enabled. If possible, disable SNMP temporarily to eliminate exposure until a patch is available. If SNMP is required, restrict SNMP access to trusted management networks using access control lists (ACLs) or firewall rules to limit exposure to potential attackers. Monitor SNMP-related memory usage closely using internal monitoring tools or external network management systems to detect abnormal increases that could indicate exploitation attempts. Implement rate limiting or filtering on SNMP requests to reduce the risk of memory exhaustion from undisclosed request types. Engage with F5 support to obtain updates on patch availability and apply fixes promptly once released. Additionally, consider network segmentation to isolate critical F5 appliances from less trusted network segments. Maintain up-to-date backups and incident response plans to recover quickly from potential service disruptions. Avoid running unsupported or End of Technical Support versions, as these are not evaluated and may contain unpatched vulnerabilities.

Description

When SNMP is configured on F5OS Appliance and Chassis systems, undisclosed requests can cause an increase in SNMP memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Impact

The primary impact of CVE-2025-47150 is on the availability of F5OS Appliances, which are widely used in enterprise and service provider networks for load balancing, security, and traffic management. A successful exploitation can cause memory exhaustion due to a leak in SNMP handling, leading to potential denial-of-service conditions. This can disrupt critical network services, degrade performance, and increase operational costs due to downtime and recovery efforts. Organizations relying on these appliances for high availability and security functions may face service interruptions, impacting business continuity and customer trust. Since the vulnerability requires only low privileges and network access, it could be exploited by internal threat actors or attackers who have gained limited network foothold. The lack of confidentiality and integrity impact reduces the risk of data breaches directly from this vulnerability, but the availability disruption alone can have significant operational consequences. The absence of known exploits in the wild currently limits immediate risk, but the medium severity score and potential for DoS warrant proactive mitigation. The impact is more pronounced in environments with heavy SNMP usage and where F5OS Appliances are critical infrastructure components.

CWE-401Missing Release of Memory after Effective Lifetime (opens in a new tab)
Variant weaknessLikelihood of exploit: Medium
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
Implementation · Libraries or Frameworks
Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Architecture and Design · Build and Compilation
Consider using the Boehm-Demers-Weiser garbage collector (bdwgc), which can help avoid leaks.
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

my.f5.com/manage/s/article/K000149820 (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 27 Feb 2026, 05:15 UTC

WeaknessesCWE-401

Technical details

References

Community reviews

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