CVE-2022-50687: Cobian Backup 11 Gravity 11.2.0.582 contains a denial of service vulnerability in the FTP password input field

Routine

MEDIUM 5.5DOWNGRADE

CVE-2022-50687 is a medium-severity flaw (CVSS 5.5) affecting backup 11. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cobian Backup 11 Gravity 11.2.0.582 contains a denial of service vulnerability in the FTP password input field that allows attackers to crash the application. Attackers can generate a specially crafted 800-byte buffer and paste it into the password field to trigger an application crash.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 88%)
CISA exploited list	No
Weakness	CWE-120
Published	2025-12-22
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: cobiansoft

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

Am I affected?

Timeline

2025-12-22 22:15 UTCPublished CVE record published
2026-06-17 05:24 UTCUpdated Record last modified

cobiansoft backup 11 DOWNGRADE

Affected: 11.2.0.582

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.2.0.582

1. Check installed version

apt-cache policy backup-11 || rpm -q backup-11 || backup-11 --version

2. No fixed release: DOWNGRADE to a release before 11.2.0.582 (Debian / Ubuntu)

apt-cache madison backup-11 sudo apt install backup-11=<VERSION_BEFORE_11.2.0.582> sudo apt-mark hold backup-11

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

dnf --showduplicates list backup-11 sudo dnf downgrade backup-11-<VERSION_BEFORE_11.2.0.582> sudo dnf versionlock add backup-11

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-2022-50687?

backup 11: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-50687 being exploited?

CVE-2022-50687 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-2022-50687 affect?

CVE-2022-50687 affects backup 11. Severity is medium (CVSS 5.5). Cobian Backup 11 Gravity 11.2.0.582 contains a denial of service vulnerability in the FTP password input field that allows attackers to crash the application. Attackers can generate a specially crafted 800-byte buffer and paste it into the

How urgent is CVE-2022-50687?

Priority 27/100. Public exploit reference

References

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