VulnerabilityPublished 9 Oct 2025

CVE-2025-27049: Qualcomm Snapdragon · Buffer Over-read

Affects Qualcomm SnapdragonSource CVE Database V5

Not known to be exploited · CVSS 5.5 Medium.

Data as of 26 Oct 2026, 09:15 UTC

CVSS 3.1 base score

5.5Medium

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

EPSS: 0.07% 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:U/C:N/I:N/A:H

Attack Vector: Local
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: 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: 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 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 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

Organizations should monitor Qualcomm’s advisories closely and apply patches promptly once they become available. In the interim, restrict access to vulnerable IOCTL interfaces by enforcing strict access controls and limiting local user privileges on affected devices. Employ device management solutions to inventory and identify devices containing the affected Qualcomm components to prioritize remediation efforts. Network segmentation can help isolate vulnerable devices to reduce the risk of lateral movement in case of compromise. Additionally, implement monitoring for unusual device crashes or service interruptions that may indicate exploitation attempts. For embedded and IoT devices where patching is challenging, consider deploying compensating controls such as application whitelisting and enhanced endpoint detection to mitigate potential exploitation. Engage with device vendors to confirm patch availability and timelines, and plan for device firmware updates as part of regular maintenance cycles.

Description

CVE-2025-27049 is a medium severity buffer over-read vulnerability (CWE-126) in various Qualcomm Snapdragon platforms and related components. It occurs during the processing of an IOCTL call for image encoding, leading to a transient denial of service (DoS) condition. The vulnerability requires low privileges and no user interaction but local access to the device. Exploitation impacts availability without compromising confidentiality or integrity. No known exploits are currently in the wild. The affected products include a broad range of Snapdragon compute platforms, FastConnect modules, and audio components widely used in mobile and embedded devices. European organizations relying on devices with these Qualcomm components may experience service disruption if exploited. Mitigation involves applying vendor patches once available and restricting access to vulnerable interfaces. Countries with high adoption of Qualcomm Snapdragon-based devices and significant mobile infrastructure, such as Germany, France, and the UK, are more likely to be impacted.

Impact

For European organizations, the primary impact of CVE-2025-27049 is the potential for transient denial of service on devices utilizing the affected Qualcomm Snapdragon components. This could disrupt critical services relying on mobile and embedded devices, such as communication infrastructure, IoT deployments, and enterprise mobile endpoints. Although the vulnerability does not compromise data confidentiality or integrity, availability interruptions could affect operational continuity, especially in sectors like telecommunications, manufacturing, and public services that depend on reliable device performance. The requirement for local access and low privileges limits remote exploitation risks but raises concerns for insider threats or compromised devices within organizational networks. The broad range of affected products means that many device types, from smartphones to compute modules and audio devices, could be impacted, increasing the attack surface. The absence of known exploits reduces immediate risk but underscores the need for proactive mitigation to prevent future exploitation.

Summary

CVE-2025-27049 is a buffer over-read vulnerability classified under CWE-126, identified in multiple Qualcomm Snapdragon platforms and associated components, including FastConnect modules, Snapdragon compute platforms, and audio subsystems. The flaw arises during the handling of an IOCTL (Input/Output Control) call related to image encoding processes. Specifically, the vulnerability allows an attacker with low-level privileges (PR:L) and local access to trigger a buffer over-read condition, which leads to a transient denial of service (DoS) by causing the affected component to malfunction or crash temporarily. The vulnerability does not require user interaction (UI:N) and does not affect confidentiality or integrity, but it impacts availability (A:H). The CVSS v3.1 base score is 5.5, reflecting a medium severity level due to the limited scope of impact and the requirement for local privileges. The affected versions span a wide range of Qualcomm products, including FastConnect 6700, 6900, 7800, QCC and QCM series chips, Snapdragon 7c+ Gen 3 Compute, Snapdragon 8cx Gen 3 Compute platforms, and various WCD and WSA audio components. These components are embedded in numerous mobile devices, IoT devices, and compute platforms. No public exploits or active exploitation have been reported as of the publication date.

CWE-126Buffer Over-read (opens in a new tab)
Variant weakness
The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (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)
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)

Community reviews

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 16 Oct 2025, 08:51 UTC

WeaknessesCWE-126

Technical details

References

Community reviews

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