Home/CVE/Integer overflow may occur if atom size is less than atom offset as there is improper validation of atom size in Snapdra
CVE
CVE-2020-3641
Integer overflow may occur if atom size is less than atom offset as there is improper validation of atom size in Snapdra
Integer overflow may occur if atom size is less than atom offset as there is improper validation of atom size in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables in APQ8009, APQ8053, APQ8096AU, APQ8098, Kamorta, MDM9206, MDM9207C, MDM9607, MSM8905, MSM8909W, MSM8917, MSM8953, MSM8996AU, MSM8998, QCA6574AU, QCM2150, QCS405, QCS605, QM215, Rennell, SA6155P, Saipan, SDA660, SDM429, SDM429W, SDM439, SDM450, SDM630, SDM632, SDM636, SDM660, SDM845, SDX20, SM6150, SM7150, SM8150, SM8250, SXR2130.
CRITICAL · CVSS 9.8
EPSS 0.01057
EPSS exploitation odds1.06% · top 39%
Schedule remediation
- 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-2020-3641, 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 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
1.06%
Top 39%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 Jun 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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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
1Attack patterns this CVE enables - the bridge from weakness to ATT&CK technique.
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Weakness Classification
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Affected Products & Versions
38qualcomm apq8009 firmwareall versions
qualcomm apq8053 firmwareall versions
qualcomm apq8096au firmwareall versions
qualcomm apq8098 firmwareall versions
qualcomm kamorta firmwareall versions
qualcomm mdm9206 firmwareall versions
qualcomm mdm9207c firmwareall versions
qualcomm mdm9607 firmwareall versions
qualcomm msm8905 firmwareall versions
qualcomm msm8909w firmwareall versions
qualcomm msm8917 firmwareall versions
qualcomm msm8953 firmwareall versions
qualcomm msm8996au firmwareall versions
qualcomm msm8998 firmwareall versions
qualcomm qca6574au firmwareall versions
qualcomm qcm2150 firmwareall versions
qualcomm qcs405 firmwareall versions
qualcomm qcs605 firmwareall versions
qualcomm qm215 firmwareall versions
qualcomm rennell firmwareall versions
qualcomm sa6155p firmwareall versions
qualcomm saipan firmwareall versions
qualcomm sda660 firmwareall versions
qualcomm sdm429 firmwareall versions
qualcomm sdm429w 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 sdm845 firmwareall versions
qualcomm sdx20 firmwareall versions
qualcomm sm6150 firmwareall versions
qualcomm sm7150 firmwareall versions
qualcomm sm8150 firmwareall versions
qualcomm sm8250 firmwareall versions
qualcomm sxr2130 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-2002-0639
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CRITICAL
CVE-2002-0391
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CRITICAL
CVE-2002-2439
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same CWE-190
HIGH
CVE-2004-0657
Integer overflow in the NTP daemon (NTPd) before 4.0 causes the NTP server to re...
same CWE-190
CVE-2018-13916
Out-of-bounds memory access in Qurt kernel function when using the identifier to...
same product
HIGH
CVE-2018-11980
When a fake broadcast/multicast 11w rmf without mmie received, since no proper l...
same product
HIGH
CVE-2019-10486
Race condition due to the lack of resource lock which will be concurrently modif...
same product
HIGH
CVE-2019-10490
Use after free issue in Xtra daemon shutdown due to static object instance getti...
same product
MEDIUM
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Vendor Advisories
1🔗
References & Sources
1Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.