CVE-2026-20217
published 2026-07-01CVE-2026-20217: A vulnerability in the PESpin 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%
31.1th percentile
A vulnerability in the PESpin 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 PESpin 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 PESpin 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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VulDB
Cisco Secure Endpoint up to 8.4.5.30483 PESpin File Format Parser buffer overflow (cisco-sa-clamav-88cFYyxR)
vuldb·2026-07-01·CVSS 7.5
CVE-2026-20217 [HIGH] Cisco Secure Endpoint up to 8.4.5.30483 PESpin File Format Parser buffer overflow (cisco-sa-clamav-88cFYyxR)
A vulnerability, which was classified as critical, has been found in Cisco Secure Endpoint. The impacted element is an unknown function of the component PESpin File Format Parser. The manipulation leads to buffer overflow.
This vulnerability is referenced as CVE-2026-20217. Remote exploitation of the attack is possible. No exploit is available.
It is advisable to upgrade the affected component.
GHSA
A vulnerability in the PESpin file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruptio
ghsa_unreviewed·2026-07-01
CVE-2026-20217 [HIGH] CWE-120 A vulnerability in the PESpin file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruptio
A vulnerability in the PESpin 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 PESpin 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 PESpin 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.
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 PESpin file
vendor_redhat·2026-07-01·CVSS 7.5
CVE-2026-20217 [HIGH] CWE-120 clamav: ClamAV: Denial of Service via crafted PESpin file
clamav: ClamAV: Denial of Service via crafted PESpin file
A vulnerability in the PESpin 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 PESpin 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 PESpin 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. An unauthenticated, remote attacker
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-20217 clamav: ClamAV: Denial of Service via crafted PESpin file [fedora-all]
bugzilla·2026-07-03·CVSS 7.5
CVE-2026-20217 [HIGH] CVE-2026-20217 clamav: ClamAV: Denial of Service via crafted PESpin file [fedora-all]
CVE-2026-20217 clamav: ClamAV: Denial of Service via crafted PESpin 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 PESpin 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 PESpin 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 PESpin content to be sca
Bugzilla
CVE-2026-20217 clamav: ClamAV: Denial of Service via crafted PESpin file [epel-all]
bugzilla·2026-07-03·CVSS 7.5
CVE-2026-20217 [HIGH] CVE-2026-20217 clamav: ClamAV: Denial of Service via crafted PESpin file [epel-all]
CVE-2026-20217 clamav: ClamAV: Denial of Service via crafted PESpin 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 PESpin 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 PESpin 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 PESpin content to be scann
Bugzilla
CVE-2026-20217 clamav: ClamAV: Denial of Service via crafted PESpin file
bugzilla·2026-07-01·CVSS 7.5
CVE-2026-20217 [HIGH] CVE-2026-20217 clamav: ClamAV: Denial of Service via crafted PESpin file
CVE-2026-20217 clamav: ClamAV: Denial of Service via crafted PESpin file
A vulnerability in the PESpin 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 PESpin 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 PESpin 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