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CVE-2026-16517— Libarchive: libarchive: signed integer overflow in archive_write_zip_header

CVSS 2.9 · Low EPSS 0.08% · P0

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-16517

Vulnerability Information
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Vulnerability Title
Libarchive: libarchive: signed integer overflow in archive_write_zip_header
Source: CVE Program / CVE List V5
Vulnerability Description
A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archive_write_zip_header function in archive_write_set_format_zip.c, when ZIP encryption is enabled and the entry file size is close to INT64_MAX, the addition of the encryption overhead to the entry size overflows int64_t, resulting in undefined behavior. This could lead to incorrect Zip64 extension decisions or potential memory corruption.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5

Affected Products

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Hardened Images 3.8.8-3.1.hum1 ~ * cpe:/a:redhat:hummingbird:1
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-16517

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III. Intelligence Information for CVE-2026-16517

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Vendor Advisories for CVE-2026-16517 (3)

Same Patch Batch · Red Hat · 2026-07-21 · 20 CVEs total

CVE-2026-598518.8 HIGHLibssh: libssh: authentication bypass via missing gssapi principal check
CVE-2026-164937.8 HIGHAnsible-core: argument injection in ansible-galaxy collection install via git clone (incom
CVE-2026-164457.5 HIGHDracut: dracut: root code execution via dhcp options command injection in networkmanager i
CVE-2026-159276.8 MEDIUMQuay: mirror-registry: ssrf: repo-level mirror accepts external_reference without url vali
CVE-2026-153706.7 MEDIUMLibssh: libssh: stack buffer overflow in sftp server longname construction
CVE-2026-598436.5 MEDIUMLibssh: libssh: denial of service via zero advertised channel packet size
CVE-2026-164616.5 MEDIUMRpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list form
CVE-2026-598446.5 MEDIUMLibssh: libssh: denial of service via oversized sftp read length
CVE-2026-598475.9 MEDIUMLibssh: libssh: integrity downgrade via openssl aes-gcm tag verification
CVE-2026-158115.8 MEDIUMKronosnet: kronosnet: encryption key exposure in memory after cryptographic configuration
CVE-2026-598455.3 MEDIUMLibssh: libssh: denial of service via unchecked proxycommand fork() failure
CVE-2026-598485.3 MEDIUMLibssh: libssh: denial of service via sftp responses with unknown request ids
CVE-2026-158124.8 MEDIUMKronosnet: kronosnet: access control list bypass via link id spoofing on unencrypted dynam
CVE-2026-598504.3 MEDIUMLibssh: libssh: use-after-free via data callbacks on closed channels
CVE-2026-125484.2 MEDIUMLibsoup: heap out-of-bounds read in libsoup due to integer truncation
CVE-2026-598463.9 LOWLibssh: libssh: information disclosure via proxycommand %r username expansion
CVE-2026-598423.7 LOWLibssh: libssh: information disclosure via short gssapi curve25519 public key
CVE-2026-125473.4 LOWLibsoup: information disclosure in libsoup via soupauthmanager proxy credential leak on pr
CVE-2026-598493.1 LOWLibssh: libssh: denial of service via automatic certificate authentication loop

IV. Related Vulnerabilities

Same product: Red Hat Hardened Images
Same vendor: Red Hat
Same weakness: CWE-190

V. Comments for CVE-2026-16517

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