15-Year-Old strongSwan Flaw Lets Attackers Crash VPNs via Integer Underflow

15-year-old strongSwan flaw allows attackers to crash VPNs via integer underflow bug, affecting EAP-TTLS plugin and multiple versions worldwide...

MGASA-2026-0072 Updated strongswan packages fix security vulnerability

strongSwan 4.5.0 6.0.5 EAP-TTLS AVP Parsing Integer Underflow. CVE-2026-25075...

Updated strongswan packages fix security vulnerability

strongSwan 4.5.0 6.0.5 EAP-TTLS AVP Parsing Integer Underflow. CVE-2026-25075...

OESA-2026-1716 freerdp security update

FreeRDP is a client implementation of the Remote Desktop Protocol RDP that follows Microsoft's open specifications. This package provides the client applications xfreerdp. Security Fixes: FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, Integer Underflow in...

CVE-2026-1005

Integer underflow in wolfSSL packet sniffer = 5.8.4 allows an attacker to cause a buffer overflow in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by sslDecodePacket. The underflow wraps a 16-bit length to a large...

CVE-2026-3549

Heap Overflow in TLS 1.3 ECH parsing. An integer underflow existed in ECH extension parsing logic when calculating a buffer length, which resulted in writing beyond the bounds of an allocated buffer. Note that in wolfSSL, ECH is off by default, and the ECH standard is still evolving...

Libsoup: libsoup: buffer overread due to integer underflow when handling zero-length resources

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strongSwan 4.5.0 < 6.0.5 EAP-TTLS AVP Parsing Integer Underflow

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PT-2026-33103

Name of the Vulnerable Software and Affected Versions xwayland versions prior to 24.1.9-2.1 xorg-x11-server versions prior to 21.1.21-5.1 Description Security issues were identified in xwayland and xorg-x11-server. Recommendations Update xwayland to version 24.1.9-2.1. Update xorg-x11-server to...

SUSE SLES15 Security Update : strongswan (SUSE-SU-2026:0981-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:0981-1 advisory. - CVE-2026-25075: Fixed integer underflow when handling EAP-TTLS AVP bsc1259472. Tenable has extracted the preceding description block...

SUSE SLED15 / SLES15 Security Update : strongswan (SUSE-SU-2026:0980-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:0980-1 advisory. - CVE-2026-25075: Fixed integer underflow when handling EAP-TTLS AVP bsc1259472. Tenable has extracted the preceding...

SUSE SLES15 / openSUSE 15 Security Update : strongswan (SUSE-SU-2026:0979-1)

The remote SUSE Linux SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:0979-1 advisory. - CVE-2026-25075: Fixed integer underflow when handling EAP-TTLS AVP bsc1259472. Tenable has extracted the preceding descripti...

CVE-2026-25075

strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authentication. Attackers can exploit the...

CVE-2026-25075

The CVE-2026-25075 issue is an integer underflow in strongSwan’s EAP-TTLS AVP parser affecting versions 4.5.0 through 6.0.4, which can crash the charon IKE daemon (DoS) via crafted AVP length fields during IKEv2 authentication. Mitigation: upgrade to strongSwan 6.0.5 or later (as confirmed by Mag...

Security update for strongswan

This update for strongswan fixes the following issues: CVE-2026-25075: Fixed integer underflow when handling EAP-TTLS AVP bsc1259472. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper patch". Alternatively you can run t...

SUSE-SU-2026:0981-1 Security update for strongswan

This update for strongswan fixes the following issues: - CVE-2026-25075: Fixed integer underflow when handling EAP-TTLS AVP bsc1259472...

Security update for strongswan

This update for strongswan fixes the following issues: CVE-2026-25075: Fixed integer underflow when handling EAP-TTLS AVP bsc1259472. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper patch". Alternatively you can run t...

SUSE-SU-2026:0980-1 Security update for strongswan

This update for strongswan fixes the following issues: - CVE-2026-25075: Fixed integer underflow when handling EAP-TTLS AVP bsc1259472...

SUSE-SU-2026:0979-1 Security update for strongswan

This update for strongswan fixes the following issues: - CVE-2026-25075: Fixed integer underflow when handling EAP-TTLS AVP bsc1259472...

SUSE-SU-2026:0978-1 Security update for strongswan

This update for strongswan fixes the following issues: - CVE-2026-25075: Fixed integer underflow when handling EAP-TTLS AVP bsc1259472. Other bug fixes: -Fix rpm scripts to not break swanctl.conf use bsc1256442: Guard rpm migration scripts migrating strongswan.service using ipsec.conf on less tha...