CVE-2007-5849: Integer underflow in the asn1_get_string function in the SNMP back end (backend/snmp.c) for CUPS 1.2 through 1

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HIGH 9.3DOWNGRADE

CVE-2007-5849 is a high-severity flaw (CVSS 9.3) affecting cups. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Integer underflow in the asn1_get_string function in the SNMP back end (backend/snmp.c) for CUPS 1.2 through 1.3.4 allows remote attackers to execute arbitrary code via a crafted SNMP response that triggers a stack-based buffer overflow.

Why this priority

Critical 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	9.3 (High)
EPSS exploit chance	13.6% (top 4%)
CISA exploited list	No
Weakness	CWE-189
Published	2007-12-19
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: easy software products

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

Am I affected?

Timeline

2007-12-19 21:46 UTCPublished CVE record published
2026-06-16 22:46 UTCUpdated Record last modified

easy software products cups DOWNGRADE

Affected: 1.2.4 · 1.2.9 · 1.2.10 · 1.2.12 · 1.3.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2.4 (Debian / Ubuntu)

apt-cache madison cups sudo apt install cups=<VERSION_BEFORE_1.2.4> sudo apt-mark hold cups

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

dnf --showduplicates list cups sudo dnf downgrade cups-<VERSION_BEFORE_1.2.4> sudo dnf versionlock add cups

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: Common UNIX Printing System 1.2/1.3 SNMP - 'asn1_get_string()' Remote 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-2007-5849?

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

Is CVE-2007-5849 being exploited?

CVE-2007-5849 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-2007-5849 affect?

CVE-2007-5849 affects cups. Severity is high (CVSS 9.3). Integer underflow in the asn1_get_string function in the SNMP back end (backend/snmp.c) for CUPS 1.2 through 1.3.4 allows remote attackers to execute arbitrary code via a crafted SNMP response that triggers a stack-based buffer overflow.

How urgent is CVE-2007-5849?

Priority 62/100. Critical severity; EPSS top 4%: very likely to be exploited; Public exploit reference

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References

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