CVE-2019-10044: Telegram Desktop before 1.5.12 on Windows, and the Telegram applications for Android, iOS, and Linux, is vulne

Q: How do I fix CVE-2019-10044?

telegram: mitigate or apply the listed mitigation; telegram desktop: upgrade to 1.5.12. Exact commands for each OS are on this page.

Q: Is CVE-2019-10044 being exploited?

CVE-2019-10044 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-10044 affect?

CVE-2019-10044 affects telegram, telegram desktop. Severity is high (CVSS 8.8). Telegram Desktop before 1.5.12 on Windows, and the Telegram applications for Android, iOS, and Linux, is vulnerable to an IDN homograph attack when displaying messages containing URLs. This occurs because the application produces a clickabl

Q: How urgent is CVE-2019-10044?

Priority 63/100. High severity; Public exploit reference; On your watchlist

This week

HIGH 8.8WATCHLISTMITIGATEUPGRADE

CVE-2019-10044 is a high-severity flaw (CVSS 8.8) affecting telegram, telegram desktop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Telegram Desktop before 1.5.12 on Windows, and the Telegram applications for Android, iOS, and Linux, is vulnerable to an IDN homograph attack when displaying messages containing URLs. This occurs because the application produces a clickable link even if (for example) Latin and Cyrillic characters exist in the same domain name, and the available font has an identical representation of characters from different alphabets.

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	3.3% (top 12%)
CISA exploited list	No
Published	2019-03-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: telegram

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

Am I affected?

Timeline

2019-03-25 20:29 UTCPublished CVE record published
2026-06-17 02:10 UTCUpdated Record last modified

telegram telegram MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

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

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

telegram telegram desktop UPGRADE

Affected: < 1.5.12

Fixed in: 1.5.12

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy telegram-desktop || rpm -q telegram-desktop || telegram-desktop --version

2. UPGRADE to 1.5.12 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade telegram-desktop

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade telegram-desktop

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2019-10044?

telegram: mitigate or apply the listed mitigation; telegram desktop: upgrade to 1.5.12. Exact commands for each OS are on this page.

Is CVE-2019-10044 being exploited?

CVE-2019-10044 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-2019-10044 affect?

CVE-2019-10044 affects telegram, telegram desktop. Severity is high (CVSS 8.8). Telegram Desktop before 1.5.12 on Windows, and the Telegram applications for Android, iOS, and Linux, is vulnerable to an IDN homograph attack when displaying messages containing URLs. This occurs because the application produces a clickabl

How urgent is CVE-2019-10044?

Priority 63/100. High severity; Public exploit reference; On your watchlist

Software pages

Windows vulnerabilities · Android vulnerabilities · iOS vulnerabilities · Telegram vulnerabilities

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References

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