Security Vulnerabilities - CVEs Published In April 2026
CVE-2026-33449 is a buffer overflow in a message handling function of
the Secure Access client prior to 14.50. Attackers with control of
a modified server can send a cryptographically valid message to the
client, overwriting a small portion of memory conceivably leading to a
denial of service.
CVSS Score
2.3
EPSS Score
0.001
Published
2026-04-30
CVE-2026-33450 is an out of bounds read vulnerability in the Secure
Access MacOS client prior to 14.50. Attackers with control of a modified
server can send a malformed packet to the client causing a denial of
service.
CVSS Score
2.3
EPSS Score
0.0
Published
2026-04-30
CVE-2026-33451 is an arbitrary read/write vulnerability in the Secure
Access Windows client prior to 14.50. Attackers with local control of
the Windows client can send malformed data to an API and elevate their
level of privilege to system.
CVSS Score
8.5
EPSS Score
0.0
Published
2026-04-30
CVE-2026-33452 is a buffer overflow vulnerability in the Secure Access
Windows client prior to 14.50. Attackers with local control of the
Windows client can use it to ‘blue screen’ the system.
CVSS Score
5.9
EPSS Score
0.0
Published
2026-04-30
CVE-2026-33448 is a format string vulnerability in the logging subsystem
of Secure Access client for MacOS prior to 14.50. Attackers with
control of a modified server can force the client to dump the contents
of a small portion of memory to the log files potentially revealing
secrets.
CVSS Score
4.8
EPSS Score
0.0
Published
2026-04-30
CVE-2026-33446 is a buffer overflow in the authentication sub-system of
the Secure Access client prior to 14.50. Attackers with control of a
modified server can send a special packet that can overwrite a small
portion of memory conceivably leading to memory corruption or a denial
of service.
CVSS Score
2.3
EPSS Score
0.001
Published
2026-04-30
CVE-2026-33447 is a buffer overflow in a message parsing function of the
Secure Access client prior to 14.50. Attackers with control of a
modified server can send a special packet that can overwrite a small
portion of memory conceivably leading to memory corruption or denial of
service.
CVSS Score
2.3
EPSS Score
0.001
Published
2026-04-30
Improper neutralization of inputs used in an OS command in the FSx Windows File Server volume mounting component in Amazon ECS Agent on Windows before version 1.103.0 might allow a remote authenticated threat actor to execute shell commands with SYSTEM privileges on the underlying host via a specially crafted username field in an ECS task definition. This issue requires permissions to register ECS task definitions or write to the Secrets Manager or SSM Parameter Store credentials used by the FSx volume configuration.
To remediate this issue, users should upgrade to version 1.103.0.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-04-30
Insufficient Verification of Data Authenticity vulnerability in hexpm hex (Hex.RemoteConverger module) allows dependency integrity bypass via unverified lockfile checksums.
Hex stores checksums for dependencies in the mix.lock file to ensure reproducible and integrity-checked builds. However, Hex.RemoteConverger.verify_resolved/2 never executes checksum verification because the lock data returned by Hex.Utils.lock/1 uses string-based dependency names, while the verification logic compares against atom-based names. This type mismatch causes the verification code path to be silently skipped. Checksums are still validated when packages are initially downloaded from the registry, but mismatches between the lockfile and resolved dependencies are not detected.
An attacker who can influence cached packages (e.g., via local cache poisoning or a compromised registry) can provide modified dependency contents that will be accepted without detection. The mix.lock file is silently rewritten with the checksum values from the registry, erasing evidence of tampering.
This issue affects hex: from 0.16.0 before 2.4.2.
CVSS Score
8.9
EPSS Score
0.0
Published
2026-04-30
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.
CVSS Score
3.7
EPSS Score
0.0
Published
2026-04-30