CVE-2026-20215
published 2026-07-01CVE-2026-20215: A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded…
PriorityP347high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.39%
31.0th percentile
A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.
This vulnerability is due to improper boundary checks for content in 7z files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains 7z content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.
Affected
152 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
| cisco | cisco_secure_endpoint | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_redhat7.5HIGH
vendor_ubuntu7.5HIGH
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Ubuntu
ClamAV vulnerabilities
vendor_ubuntu·2026-07-08·CVSS 7.5
CVE-2026-20215 [HIGH] ClamAV vulnerabilities
Title: ClamAV vulnerabilities
Summary: Several security issues were fixed in ClamAV.
It was discovered that ClamAV incorrectly handled certain PE files. A
remote attacker could possibly use this issue to cause ClamAV to crash,
resulting in a denial of service. (CVE-2026-20213, CVE-2026-20214,
CVE-2026-20217)
It was discovered that ClamAV incorrectly handled certain 7z archive
files. A remote attacker could possibly use this issue to cause ClamAV to
crash, resulting in a denial of service. (CVE-2026-20215)
It was discovered that ClamAV incorrectly handled extraction limits for
certain InstallShield archives. A remote attacker could possibly use this
issue to cause ClamAV to use excessive resources, leading to a denial of
service. (CVE-2026-20216)
It was discovered that ClamAV incorrect
Red Hat
clamav: ClamAV: Denial of Service via crafted 7z file
vendor_redhat·2026-07-01·CVSS 7.5
CVE-2026-20215 [HIGH] CWE-120 clamav: ClamAV: Denial of Service via crafted 7z file
clamav: ClamAV: Denial of Service via crafted 7z file
A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.
This vulnerability is due to improper boundary checks for content in 7z files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains 7z content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.
A flaw was found in ClamAV's 7z file format parser. An unauthenticated, remote
VulDB
Cisco Secure Endpoint up to 8.4.5.30483 ClamAV buffer overflow (cisco-sa-clamav-88cFYyxR)
vuldb·2026-07-01·CVSS 7.5
CVE-2026-20215 [HIGH] Cisco Secure Endpoint up to 8.4.5.30483 ClamAV buffer overflow (cisco-sa-clamav-88cFYyxR)
A vulnerability classified as critical was found in Cisco Secure Endpoint. The affected element is an unknown function of the component ClamAV. Executing a manipulation can lead to buffer overflow.
The identification of this vulnerability is CVE-2026-20215. The attack may be launched remotely. There is no exploit available.
Upgrading the affected component is advised.
GHSA
A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on
ghsa_unreviewed·2026-07-01
CVE-2026-20215 [HIGH] CWE-120 A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on
A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.
This vulnerability is due to improper boundary checks for content in 7z files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains 7z content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.
Suricata
ET WEB_SPECIFIC_APPS FLIR dns dns Parameter Command Injection Attempt (CVE-2017-20215)
suricata·2026-01-08·CVSS 8.7
CVE-2017-20215 [HIGH] ET WEB_SPECIFIC_APPS FLIR dns dns Parameter Command Injection Attempt (CVE-2017-20215)
ET WEB_SPECIFIC_APPS FLIR dns dns Parameter Command Injection Attempt (CVE-2017-20215)
Rule: alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS FLIR dns dns Parameter Command Injection Attempt (CVE-2017-20215)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:33; content:"/page/maintenance/lanSettings/dns"; fast_pattern; http.request_body; content:"dns"; pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R"; reference:url,www.zeroscience.mk/codes/flir_rce.txt; reference:cve,2017-20215; classtype:attempted-admin; sid:2066627; rev:1; metadata:affected_product FLIR, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_01_08, cve CVE_2017_20215, deployment Perimeter, deployment Internal, perf
No public exploits indexed.
Bugzilla
CVE-2026-20215 clamav: ClamAV: Denial of Service via crafted 7z file [epel-all]
bugzilla·2026-07-03·CVSS 7.5
CVE-2026-20215 [HIGH] CVE-2026-20215 clamav: ClamAV: Denial of Service via crafted 7z file [epel-all]
CVE-2026-20215 clamav: ClamAV: Denial of Service via crafted 7z file [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.
This vulnerability is due to improper boundary checks for content in 7z files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains 7z content to be scanned by ClamAV on
Bugzilla
CVE-2026-20215 clamav: ClamAV: Denial of Service via crafted 7z file [fedora-all]
bugzilla·2026-07-03·CVSS 7.5
CVE-2026-20215 [HIGH] CVE-2026-20215 clamav: ClamAV: Denial of Service via crafted 7z file [fedora-all]
CVE-2026-20215 clamav: ClamAV: Denial of Service via crafted 7z file [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.
This vulnerability is due to improper boundary checks for content in 7z files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains 7z content to be scanned by ClamAV o
Bugzilla
CVE-2026-20215 clamav: ClamAV: Denial of Service via crafted 7z file
bugzilla·2026-07-01·CVSS 7.5
CVE-2026-20215 [HIGH] CVE-2026-20215 clamav: ClamAV: Denial of Service via crafted 7z file
CVE-2026-20215 clamav: ClamAV: Denial of Service via crafted 7z file
A vulnerability in the 7z file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.
This vulnerability is due to improper boundary checks for content in 7z files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains 7z content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.
Hackernews
⚡ Weekly Recap: Proxy Botnets, Browser Ransomware, AI Agent Tricks, Fake PoC Malware and More
blogs_hackernews·2026-07-06
CVE-2026-48276 ⚡ Weekly Recap: Proxy Botnets, Browser Ransomware, AI Agent Tricks, Fake PoC Malware and More
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## ⚡ Weekly Recap: Proxy Botnets, Browser Ransomware, AI Agent Tricks, Fake PoC Malware and More
A streaming box should not need a threat model. Neither should a username field, a demo repo, a reset flow, or a browser permission prompt. That is the irritating part this week: the risky pieces were ordinary.
Home devices became a routing cover. Clean code pulled dirt from a dependency. Identity shortcuts aged badly. AI systems trusted the wrong instructions. Same soft spot throughout: trust placed one layer too early.
Below is the full recap, since this is apparently what counted as a normal week.
## ⚡ Threat of the Week
Net
2026-07-01
Published