Home/CVE/u'Use after free while installing new security rule in ipcrtr as old one is deleted and this rule could still be in use
CVE
CVE-2020-3696
u'Use after free while installing new security rule in ipcrtr as old one is deleted and this rule could still be in use
u'Use after free while installing new security rule in ipcrtr as old one is deleted and this rule could still be in use for checking security permission for particular process' in Snapdragon Auto, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking in APQ8009, APQ8017, APQ8053, APQ8096AU, APQ8098, IPQ4019, IPQ6018, IPQ8064, IPQ8074, MDM9206, MDM9207C, MDM9607, MSM8905, MSM8909W, MSM8996AU, QCA4531, QCA6574AU, QCA9531, QCM2150, QCS605, SDM429W, SDX20, SDX24.
HIGH · CVSS 7.8
EPSS 0.00187
EPSS exploitation odds0.19% · top 91%
Schedule remediation
- CVSS base score ≥ 7.0
No Sigma yet — build one →
YARA rules0
Look this up elsewhere - one-click external pivots
▸
How to read a CVE - triage first, then detect and patch
This page is every public fact about CVE-2020-3696, 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).
EPSS exploitation probability
0.19%
Top 91%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:L/AC:L/PR:L/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
◆
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⬡
Weakness Classification
CWE-416Use After Free
▤
Affected Products & Versions
23qualcomm apq8009 firmwareall versions
qualcomm apq8017 firmwareall versions
qualcomm apq8053 firmwareall versions
qualcomm apq8096au firmwareall versions
qualcomm apq8098 firmwareall versions
qualcomm ipq4019 firmwareall versions
qualcomm ipq6018 firmwareall versions
qualcomm ipq8064 firmwareall versions
qualcomm ipq8074 firmwareall versions
qualcomm mdm9206 firmwareall versions
qualcomm mdm9207c firmwareall versions
qualcomm mdm9607 firmwareall versions
qualcomm msm8905 firmwareall versions
qualcomm msm8909w firmwareall versions
qualcomm msm8996au firmwareall versions
qualcomm qca4531 firmwareall versions
qualcomm qca6574au firmwareall versions
qualcomm qca9531 firmwareall versions
qualcomm qcm2150 firmwareall versions
qualcomm qcs605 firmwareall versions
qualcomm sdm429w firmwareall versions
qualcomm sdx20 firmwareall versions
qualcomm sdx24 firmwareall versions
▤
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-2006-4434
Use-after-free vulnerability in Sendmail before 8.13.8 allows remote attackers t...
same CWE-416
HIGH
CVE-2006-4997
The clip_mkip function in net/atm/clip.c of the ATM subsystem in Linux kernel al...
same CWE-416
HIGH
CVE-2007-3929
Use-after-free vulnerability in the BitTorrent support in Opera before 9.22 allo...
same CWE-416
CVE-2008-0077
Use-after-free vulnerability in Microsoft Internet Explorer 6 SP1, 6 SP2, and an...
same CWE-416
HIGH
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
🔗
References & Sources
2Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.