Report · Check Point ResearchAbout CVE-2026-3502Published 31 Mar 2026

Operation TrueChaos: 0-Day Exploitation Against Southeast Asian Government Targets

Source Check Point Research

Compare

Authoritative record:CVE-2026-3502· High 7.8

Exploited in the wild · KEV due 16 Apr 2026 : apply the vendor's fix or mitigations to TrueConf Client now.

Data as of 30 Oct 2026, 11:34 UTC

CVSS 3.1 base score

7.8High

How severe the flaw is on the 0–10 CVSS scale.

KEV deadline: 16 Apr 2026 US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates

CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L

Attack Vector: Adjacent
Attack Complexity: Low
Privileges Required: High
User Interaction: Required
Scope: Changed
Confidentiality: High
Integrity: High
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Adjacent: The vulnerable component is bound to the network stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared physical (e.g., Bluetooth or IEEE 802.11) or logical (e.g., local IP subnet) network, or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN to an administrative network zone).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

Disclosed: evidence found.
CVE published 30 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: evidence found.
Listed in CISA KEV 3 days after disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

CVE ID reserved
by Check Point Software Ltd.
3 Mar 202621:18 UTC, 27 days before disclosure
CVE published
on cve.org
30 Mar 202618:05 UTC, t = 0
In Threat Radar
record ingested
30 Mar 202618:38 UTC, 33 minutes after disclosure
Added to CISA KEV (opens in a new tab)
exploitation confirmed
2 Apr 2026, 3 days after disclosure
KEV remediation due
US federal deadline
16 Apr 2026, 17 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 24 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
TrueConfTrueConf Client	Affected =TrueConf Client versions 8.1.0 through 8.5.2	Fixed in–

AI-suggested

Immediate monitoring of TrueConf client activity for unusual behavior or network connections indicative of exploitation attempts.
Implement network segmentation to isolate systems running TrueConf from sensitive government networks to limit lateral movement.
Apply strict access controls and least privilege principles on devices with TrueConf installed.
Coordinate with TrueConf vendors for timely patch releases and deploy updates as soon as they become available.
Employ endpoint detection and response (EDR) solutions capable of identifying exploit behaviors related to zero-day vulnerabilities.
Conduct threat hunting exercises focused on indicators of compromise related to Operation TrueChaos.
Educate IT and security teams on the risks of supply chain and software vulnerabilities in collaboration tools.
Maintain comprehensive logging and audit trails for forensic analysis in case of compromise.
Consider temporary alternative communication platforms if patching is delayed and risk is high.
Engage with regional cybersecurity information sharing groups to stay updated on evolving threats.

Description

Key Points Introduction At the beginning of 2026, Check Point Research observed a series of targeted attacks against government entities in Southeast Asia carried out via a legitimate TrueConf software installed in the targets’ environment. The investigation led to the discovery of a zero-day vulnerability in the TrueConf client, tracked as CVE-2026-3502 with a CVSS score of 7.8. […] The post Operation TrueChaos: 0-Day Exploitation Against Southeast Asian Government Targets appeared first on Check Point Research .

Impact

The exploitation of CVE-2026-3502 in TrueConf client software can lead to unauthorized access, remote code execution, and potential compromise of sensitive government communications and data. This threatens the confidentiality and integrity of critical information, potentially enabling espionage, data theft, or disruption of government operations. Given the targeting of government entities, the impact extends to national security and diplomatic affairs. The use of a legitimate software vector complicates detection and response, increasing the risk of prolonged undetected intrusions. Organizations relying on TrueConf for secure communications may face operational disruptions and reputational damage if exploited. The medium-to-high CVSS score reflects significant risk, and the absence of patches at the time of discovery elevates urgency. The campaign’s focus on Southeast Asia also indicates a regional concentration of impact, but similar vulnerabilities in widely used collaboration tools could have broader implications if exploited elsewhere.

References

research.checkpoint.com/2026/operation-truechaos-0-day-exploitation-against-southeast-asian-government-targets/ (opens in a new tab)

Community reviews

Loading reviews…