CVE-2018-11616: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Tencent Fo

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HIGH 8.8DOWNGRADE

CVE-2018-11616 is a high-severity flaw (CVSS 8.8) affecting foxmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Tencent Foxmail 7.2.9.115. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of URI handlers. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An att

Why this priority

High severity
EPSS top 8%: very likely to be exploited

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	4.9% (top 8%)
CISA exploited list	No
Weakness	CWE-78
Published	2018-08-30
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: tencent

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-08-30 12:29 UTCPublished CVE record published
2026-06-17 01:36 UTCUpdated Record last modified

tencent foxmail DOWNGRADE

Affected: 7.2.9.115

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.2.9.115

1. Check installed version

apt-cache policy foxmail || rpm -q foxmail || foxmail --version

2. No fixed release: DOWNGRADE to a release before 7.2.9.115 (Debian / Ubuntu)

apt-cache madison foxmail sudo apt install foxmail=<VERSION_BEFORE_7.2.9.115> sudo apt-mark hold foxmail

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list foxmail sudo dnf downgrade foxmail-<VERSION_BEFORE_7.2.9.115> sudo dnf versionlock add foxmail

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-11616?

foxmail: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-11616 being exploited?

CVE-2018-11616 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-11616 affect?

CVE-2018-11616 affects foxmail. Severity is high (CVSS 8.8). This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Tencent Foxmail 7.2.9.115. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open

How urgent is CVE-2018-11616?

Priority 54/100. High severity; EPSS top 8%: very likely to be exploited

Related CVEs

CVE-2008-5839 HIGH 9.3 DOWNGRADE Buffer overflow in Foxmail 6.5 allows remote attackers to execute arbitrary code via a long mailto URI in the

References

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