Home/CVE/u'Buffer over-read issue in Bluetooth peripheral firmware due to lack of check for invalid opcode and length of opcode r
CVE
CVE-2020-37033
u'Buffer over-read issue in Bluetooth peripheral firmware due to lack of check for invalid opcode and length of opcode r
u'Buffer over-read issue in Bluetooth peripheral firmware due to lack of check for invalid opcode and length of opcode received from central device(This CVE is equivalent to Link Layer Length Overfow issue (CVE-2019-16336,CVE-2019-17519) and Silent Length Overflow issue(CVE-2019-17518) mentioned in sweyntooth paper)' in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music in APQ8053, APQ8076, AR9344, Bitra, Kamorta, MDM9206, MDM9207C, MDM9607, MSM8905, MSM8917, MSM8937, MSM8940, MSM8953, Nicobar, QCA6174A, QCA9377, QCM2150, QCM6125, QCS404, QCS405, QCS605, QCS610, QM215, Rennell, SC8180X, SDM429, SDM439, SDM450, SDM630, SDM632, SDM636, SDM660, SDM670, SDM710, SDM845, SDX20, SDX24, SM6150, SM7150, SM8150, SXR1130.
CRITICAL · CVSS 9.8
EPSS 0.00702
EPSS exploitation odds0.70% · top 50%
Act now
- Public exploit or PoC is available
- CVSS base score ≥ 7.0
No Sigma yet — build one →
YARA rules0
Look this up elsewhere - one-click external pivots
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How to read a CVE - triage first, then detect and patch
This page is every public fact about CVE-2020-3703, cross-linked. Its job is to answer one question fast - does this need my attention now? - and then hand you the two things you do about it. Here is how an analyst reads it.
Triage: should I act now? Four signals, and they are not interchangeable:
CVSSseverity - how bad it is IF exploited, 0-10. A high CVSS alone is not urgency; a flaw can be a perfect 10 and never actually be attacked.
EPSSprobability - a model’s estimate of the chance it is exploited in the next 30 days, 0-1. This is the “will it actually happen” signal.
CISA KEVconfirmed - it is being exploited in the wild right now. The strongest signal on the page; KEV beats any score.
Weaponisedavailability - public exploits / PoCs, and especially Metasploit modules rated Excellent / Great. Reliable, packaged exploit code means low-skill attackers can use it today.
How they combine: KEV, or a dependable Metasploit module, means patch now regardless of CVSS. High CVSS + low EPSS + no exploit is real but not an emergency - schedule it. Low CVSS but KEV-listed still gets patched now. The verdict above already weighed these for you; this is how it got there.
Then what - two workflows:
Detectwhen you cannot patch today, follow this CVE to the ATT&CK techniques it enables, then Build a SIEM detection (the green button) - author a rule, test it in Atomic, deploy it. That buys visibility while the patch waits.
PatchAffected products / packages tell you if you are exposed; Fixed versions by distribution and Vendor advisories give the exact version that closes it.
Reading order for the panels below: verdict + badges, then Public exploits / Metasploit (is it weaponised), then ATT&CK techniques + Sigma / IDS rules (can I detect it), then Affected products / packages + Fixed versions (am I exposed, what patches it), then Threat actors / IOCs (who uses it), then Scoring & timeline / references (the evidence).
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Exploitation evidence
1 of 7 sources
Corroboration score 8/100 ·
emerging.
This counts how many independent sources have exploitation evidence, and separates two different things:
confirmed in-the-wild use (CISA KEV, Microsoft MSRC, ransomware activity) from
exploit / PoC availability (Metasploit, ExploitDB, Nuclei, public PoCs). A template or PoC existing means
an attack is possible and easy - it is not, on its own, proof the CVE is being exploited in the wild.
Exploit / PoC available
public PoC
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Exploitation momentum
484 days of EPSSdormant
Flat and low - no real exploitation pressure. This reads the direction and speed of EPSS over time, which can move before EPSS itself peaks or before CISA lists it.
EPSS exploitation probability
0.70%
Top 50%odds of exploitation in the next 30 days
CVSS metric silhouette
shape grows toward worst-case
SSVC triage
No SSVC vulnrichment for this CVE. CISA's Vulnrichment program scores newer CVEs (~2024 onwards) plus selected older critical ones. Use the EPSS probability + KEV status to triage instead.
CVSS vector breakdown
Exploitability - how they get in
Attack Vector
Network
Adjacent
Local
Physical
Attack Complexity
Low
High
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Impact - what breaks
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLifecycle
- 02 Nov 2020Published to NVD
- 17 Jun 2026Last modified
Every entry is a recorded date - NVD publish/modify, CISA KEV add, public exploit disclosure. No inferred events.
Attack path
Full kill chain
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Public Exploits & PoCs
3These PoC and exploit links come from public sources and are not verified to be safe or functional. Review the code before running anything, and treat unverified entries as untrusted. Signed-in users mark whether it works, rate 1-10, and can report malware with a required reason that becomes a public comment.
Source
Works?
no reports yet
Rating
Works?
no reports yet
Rating
Works?
no reports yet
Rating
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ATT&CK techniques
1Techniques this CVE enables. Pills with a solid outline are high confidence - named directly in ATT&CK or Nuclei, or human-curated by CTID; the rest are inferred from the weakness type using MITRE's CVE Mapping Methodology and the CWE → CAPEC chain. Broad, generic-weakness guesses are filtered out. A small N× marks a technique that N independent sources agree on.
▤ Build a SIEM detection for these techniques▤
CAPEC attack patterns
12Attack patterns this CVE enables - the bridge from weakness to ATT&CK technique.
CAPEC-CAPEC-10 · Buffer Overflow via Environment Variables CAPEC-CAPEC-101 · Server Side Include (SSI) Injection CAPEC-CAPEC-104 · Cross Zone Scripting CAPEC-CAPEC-108 · Command Line Execution through SQL Injection CAPEC-CAPEC-109 · Object Relational Mapping Injection CAPEC-CAPEC-110 · SQL Injection through SOAP Parameter Tampering CAPEC-CAPEC-120 · Double Encoding CAPEC-CAPEC-13 · Subverting Environment Variable Values CAPEC-CAPEC-135 · Format String Injection CAPEC-CAPEC-136 · LDAP Injection CAPEC-CAPEC-14 · Client-side Injection-induced Buffer Overflow CAPEC-CAPEC-153 · Input Data Manipulation
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Weakness Classification
CWE-125Out-of-bounds Read
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Affected Products & Versions
41qualcomm apq8053 firmwareall versions
qualcomm apq8076 firmwareall versions
qualcomm ar9344 firmwareall versions
qualcomm bitra firmwareall versions
qualcomm kamorta firmwareall versions
qualcomm mdm9206 firmwareall versions
qualcomm mdm9207c firmwareall versions
qualcomm mdm9607 firmwareall versions
qualcomm msm8905 firmwareall versions
qualcomm msm8917 firmwareall versions
qualcomm msm8937 firmwareall versions
qualcomm msm8940 firmwareall versions
qualcomm msm8953 firmwareall versions
qualcomm nicobar firmwareall versions
qualcomm qca6174a firmwareall versions
qualcomm qca9377 firmwareall versions
qualcomm qcm2150 firmwareall versions
qualcomm qcm6125 firmwareall versions
qualcomm qcs404 firmwareall versions
qualcomm qcs405 firmwareall versions
qualcomm qcs605 firmwareall versions
qualcomm qcs610 firmwareall versions
qualcomm qm215 firmwareall versions
qualcomm rennell firmwareall versions
qualcomm sc8180x firmwareall versions
qualcomm sdm429 firmwareall versions
qualcomm sdm439 firmwareall versions
qualcomm sdm450 firmwareall versions
qualcomm sdm630 firmwareall versions
qualcomm sdm632 firmwareall versions
qualcomm sdm636 firmwareall versions
qualcomm sdm660 firmwareall versions
qualcomm sdm670 firmwareall versions
qualcomm sdm710 firmwareall versions
qualcomm sdm845 firmwareall versions
qualcomm sdx20 firmwareall versions
qualcomm sdx24 firmwareall versions
qualcomm sm6150 firmwareall versions
qualcomm sm7150 firmwareall versions
qualcomm sm8150 firmwareall versions
qualcomm sxr1130 firmwareall versions
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Related CVEs
8CVEs linked to this one by a shared weakness (CWE) or affected product - joins on data already in the engine, with the reason shown per row.
CVE-1999-0022
Local user gains root privileges via buffer overflow in rdist, via expstr() func...
same CWE-125
HIGH
CVE-1999-0029
root privileges via buffer overflow in ordist command on SGI IRIX systems.
1
same CWE-125
HIGH
CVE-1999-0006
Buffer overflow in POP servers based on BSD/Qualcomm's qpopper allows remote att...
2
same CWE-125
CRITICAL
CVE-2004-0183
TCPDUMP 3.8.1 and earlier allows remote attackers to cause a denial of service (...
same CWE-125
CVE-1999-0265
ICMP redirect messages may crash or lock up a host.
same CWE-20
CVE-1999-0726
An attacker can conduct a denial of service in Windows NT by executing a program...
same CWE-20
CVE-1999-0918
Denial of service in various Windows systems via malformed, fragmented IGMP pack...
3
same CWE-20
CVE-1999-0721
Denial of service in Windows NT Local Security Authority (LSA) through a malform...
same CWE-20
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Vendor Advisories
1🔗
References & Sources
2Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.