CVE-2005-1099: Multiple buffer overflows in the HandleChild function in server.c in Greylisting daemon (GLD) 1.3 and 1.4, whe

Q: How do I fix CVE-2005-1099?

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

Q: Is CVE-2005-1099 being exploited?

CVE-2005-1099 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-2005-1099 affect?

CVE-2005-1099 affects gld. Severity is high (CVSS 10.0). Multiple buffer overflows in the HandleChild function in server.c in Greylisting daemon (GLD) 1.3 and 1.4, when GLD is listening on a network interface, allow remote attackers to execute arbitrary code.

Q: How urgent is CVE-2005-1099?

Priority 65/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference

This week

HIGH 10.0DOWNGRADE

CVE-2005-1099 is a high-severity flaw (CVSS 10.0) affecting gld. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple buffer overflows in the HandleChild function in server.c in Greylisting daemon (GLD) 1.3 and 1.4, when GLD is listening on a network interface, allow remote attackers to execute arbitrary code.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	67.7% (top 1%)
CISA exploited list	No
Published	2005-04-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: salim gasmi

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

Am I affected?

Timeline

2005-04-12 04:00 UTCPublished CVE record published
2026-06-16 22:12 UTCUpdated Record last modified

salim gasmi gld DOWNGRADE

Affected: 1.0 · 1.1 · 1.2 · 1.3 · 1.3.1 · 1.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison gld sudo apt install gld=<VERSION_BEFORE_1.0> sudo apt-mark hold gld

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

dnf --showduplicates list gld sudo dnf downgrade gld-<VERSION_BEFORE_1.0> sudo dnf versionlock add gld

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: Salim Gasmi GLD (Greylisting Daemon) - Postfix Buffer Overflow (Metasploit)
Exploit-DB: Salim Gasmi GLD (Greylisting Daemon) 1.0 < 1.4 - Postfix Greylisting Buffer Overflow (Metasploit)
Exploit-DB: Salim Gasmi GLD (Greylisting Daemon) 1.x - Postfix Greylisting Daemon Buffer Overflow
Metasploit: GLD (Greylisting Daemon) Postfix Buffer Overflow

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-2005-1099?

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

Is CVE-2005-1099 being exploited?

CVE-2005-1099 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-2005-1099 affect?

CVE-2005-1099 affects gld. Severity is high (CVSS 10.0). Multiple buffer overflows in the HandleChild function in server.c in Greylisting daemon (GLD) 1.3 and 1.4, when GLD is listening on a network interface, allow remote attackers to execute arbitrary code.

How urgent is CVE-2005-1099?

Priority 65/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2005-1100 HIGH 7.5 DOWNGRADE Format string vulnerability in the ErrorLog function in cnf.c in Greylisting daemon (GLD) 1.3 and 1.4 allows r

References

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