CVE-2025-27040VulnerabilityPublished 9 Oct 2025

CVE-2025-27040: Qualcomm Snapdragon · Improper Input Validation

Affects Qualcomm SnapdragonSource 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: 0.08% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Local
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Changed
Confidentiality: High
Integrity: None
Availability: None

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

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
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: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 9 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

AI-suggested

1. Monitor Qualcomm’s official security advisories closely for the release of patches addressing CVE-2025-27040 and apply them promptly once available. 2. Restrict access to devices running affected Qualcomm Snapdragon platforms, especially limiting local access to trusted personnel and processes to reduce the risk of exploitation requiring local privileges. 3. Implement strict input validation and sanitization controls at the hypervisor or device management layer where feasible, to mitigate improper input handling. 4. Employ network segmentation and isolation for devices using vulnerable chipsets to contain potential information leakage and limit lateral movement. 5. Conduct regular security audits and log reviews focusing on hypervisor and virtualization components to detect anomalous activities indicative of exploitation attempts. 6. For IoT and embedded device deployments, ensure firmware integrity verification and secure update mechanisms are in place to facilitate timely remediation. 7. Engage with device vendors and supply chain partners to assess exposure and coordinate vulnerability management efforts. 8. Consider deploying endpoint detection and response (EDR) solutions capable of monitoring hypervisor-level activities and local privilege escalations. 9. Educate system administrators and security teams about the specific nature of this vulnerability to enhance detection and response capabilities.

Description

CVE-2025-27040 is a medium severity vulnerability in Qualcomm Snapdragon platforms caused by improper input validation during hypervisor log processing. It can lead to information disclosure without requiring user interaction but does require low-level privileges. The flaw affects a wide range of Qualcomm Snapdragon chipsets used in embedded and IoT devices. Exploitation could allow attackers to access sensitive information from the hypervisor logs, potentially compromising confidentiality. No known exploits are currently in the wild, and no patches have been published yet. European organizations using affected devices, especially in telecom, IoT, and networking sectors, should be vigilant. Mitigation involves monitoring vendor updates, restricting access to vulnerable components, and applying strict input validation controls where possible. Countries with strong telecom infrastructure and high adoption of Qualcomm chipsets, such as Germany, France, and the UK, are most likely to be impacted.

Impact

For European organizations, the impact of CVE-2025-27040 is significant in sectors relying heavily on Qualcomm Snapdragon-based hardware, such as telecommunications infrastructure, IoT deployments, smart home devices, and embedded networking equipment. Information disclosure from hypervisor logs could expose sensitive operational data, cryptographic keys, or configuration details, potentially undermining confidentiality and enabling subsequent targeted attacks. This is particularly critical for telecom operators and enterprises managing large-scale IoT ecosystems, where compromised hypervisor data could lead to broader network infiltration or data breaches. The medium severity rating suggests that while the vulnerability is not immediately catastrophic, it poses a meaningful risk to confidentiality and system security. European organizations with limited patch management capabilities or those using legacy Qualcomm devices may face prolonged exposure. Additionally, the vulnerability could affect supply chain security if embedded devices with these chipsets are integrated into critical infrastructure. The lack of known exploits reduces immediate risk but does not eliminate the threat, especially given the broad range of affected devices and the strategic importance of telecommunications and IoT in Europe.

Summary

CVE-2025-27040 is a vulnerability classified under CWE-20 (Improper Input Validation) affecting numerous Qualcomm Snapdragon platforms, including CSR8811, Immersive Home series, IPQ series, QCA series, QCN series, and SDX55 chipsets. The vulnerability arises during the processing of hypervisor logs, where insufficient validation of input data can lead to information disclosure. Specifically, the hypervisor component responsible for managing virtualized environments on these chipsets does not adequately sanitize or verify the data it processes from logs, allowing an attacker with low-level privileges (PR:L) to extract sensitive information. The CVSS v3.1 score is 6.5 (medium severity), reflecting that the attack vector is local, requires low privileges, no user interaction, and impacts confidentiality with a scope change (S:C). The vulnerability does not affect integrity or availability but can compromise confidentiality by leaking sensitive hypervisor data. The affected platforms are widely used in embedded systems, IoT devices, networking equipment, and mobile devices, which rely on Qualcomm Snapdragon chipsets for processing and connectivity. No known exploits have been reported in the wild, and Qualcomm has not yet released patches, indicating the need for proactive mitigation. The vulnerability's exploitation could facilitate further attacks by revealing internal system states or configurations, aiding attackers in lateral movement or privilege escalation.

CWE-20Improper Input Validation (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #18OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Attack Surface Reduction
Consider using language-theoretic security (LangSec) techniques that characterize inputs using a formal language and build "recognizers" for that language. This effectively requires parsing to be a distinct layer that effectively enforces a boundary between raw input and internal data representations, instead of…
Architecture and Design · Libraries or Frameworks
Use an input validation framework such as Struts or the OWASP ESAPI Validation API. Note that using a framework does not automatically address all input validation problems; be mindful of weaknesses that could arise from misusing the framework itself (CWE-1173).
Architecture and Design · Implementation · Attack Surface Reduction
Understand all the potential areas where untrusted inputs can enter the product, including but not limited to: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any…
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
Injection Prevention (opens in a new tab)
SQL Injection Prevention (opens in a new tab)
Injection Prevention in Java (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
Attack patterns
Buffer Overflow via Environment Variables (opens in a new tab)
Server Side Include (SSI) Injection (opens in a new tab)
Cross Zone Scripting (opens in a new tab)
Command Line Execution through SQL Injection (opens in a new tab)
Object Relational Mapping Injection (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

docs.qualcomm.com/product/publicresources/securitybulletin/october-2025-bulletin.html (opens in a new tab)

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 16 Oct 2025, 08:55 UTC

WeaknessesCWE-20

Technical details

References

Community reviews

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