CVE-2026-57546: Buffer Over-read in WLAN HAL

10

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+1
Technical severity (high)+6
Automatable exploitation (SSVC)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.17%

ahead of 6% of scored CVEs · Oct 15, 2026

Affects

Qualcomm

Congo Firmware and 14 more

CVSS base

7.5

High · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

Yes

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Qualcomm Congo Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Fastconnect 8800 Mobile Connectivity System Firmware…).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Qualcomm	Congo Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Fastconnect 7800 Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Fastconnect 8800 Mobile Connectivity System Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Orne Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Pandeiro Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Sm8950 Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Sm8950p Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Sm8975 Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Sm8975p Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Snapdragon	version Congoversion Qualcomm FastConnect 8800 Mobile Connectivity System	Vulnerable	CVE Program (cve.org) e CISA ADP
Qualcomm	Wcd9378 Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Wcd9395 Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Wcn7880 Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Wcn7881 Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Qualcomm	Wcn8841 Firmware	versions not specified by the source	Vulnerable	NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
7.5	CVSS 3.1	High	3.9	3.6	product-security@qualcomm.com via NIST National Vulnerability Database
7.5	CVSS 3.1	High	—	—	qualcomm via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (score shown at the top: product-security@qualcomm.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-126

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 15, 2026 · 3 reading(s) · max 0.17%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).

web/proxy/WAF logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first.

2026
Affected products added · qualcomm, inc./snapdragon
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
CVSS changed · 7.5
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Analyzed
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
CVE published
Oct 6, 2026 · qualcomm

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

1 on the record

docs.qualcomm.com/product/publicresources/securitybulletin/october-2026-bulletin.html
Vendor Advisory, NIST National Vulnerability Database

Elsewhere on this site

Qualcomm
every CVE for this vendor

CWE-126
other pages naming this weakness

Related CVEs (same products)

High CVE-2026-57559 Use After Free in DSP_Services 10d
High CVE-2026-25302 Improper Verification of Cryptographic Signature in Boot 10d
High CVE-2026-57537 Use After Free in DSP Service 10d
High CVE-2026-57545 Untrusted Pointer Dereference in Graphics 10d
High CVE-2026-57554 Use After Free in DSP Service 10d
High CVE-2026-57555 Use After Free in DSP Service 10d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-57546 is "Buffer Over-read in WLAN HAL", rated High. It affects Congo Firmware (Qualcomm); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.5 describes technical severity. EPSS 0.17% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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