CVE-2005-2777: Looking Glass 20040427 allows remote attackers to execute arbitrary commands via shell metacharacters in the D

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HIGH 7.5DOWNGRADE

CVE-2005-2777 is a high-severity flaw (CVSS 7.5) affecting looking glass. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Looking Glass 20040427 allows remote attackers to execute arbitrary commands via shell metacharacters in the DNS lookup query field.

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	12.2% (top 4%)
CISA exploited list	No
Published	2005-09-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: looking glass

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2005-09-02 23:03 UTCPublished CVE record published
2026-06-16 22:15 UTCUpdated Record last modified

looking glass looking glass DOWNGRADE

Affected: 2004-04-27

Fixed in: no fixed release known

Safe to downgrade to: a release before 2004-04-27

1. Check installed version

apt-cache policy looking-glass || rpm -q looking-glass || looking-glass --version

2. No fixed release: DOWNGRADE to a release before 2004-04-27 (Debian / Ubuntu)

apt-cache madison looking-glass sudo apt install looking-glass=<VERSION_BEFORE_2004-04-27> sudo apt-mark hold looking-glass

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

dnf --showduplicates list looking-glass sudo dnf downgrade looking-glass-<VERSION_BEFORE_2004-04-27> sudo dnf versionlock add looking-glass

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Looking Glass 20040427 - Remote Command Execution

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-2005-2777?

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

Is CVE-2005-2777 being exploited?

CVE-2005-2777 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-2005-2777 affect?

CVE-2005-2777 affects looking glass. Severity is high (CVSS 7.5). Looking Glass 20040427 allows remote attackers to execute arbitrary commands via shell metacharacters in the DNS lookup query field.

How urgent is CVE-2005-2777?

Priority 55/100. High severity; EPSS top 4%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2005-2776 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in Looking Glass 20040427 allow remote attackers to inject

References

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