CVE-2017-2788: A buffer overflows exists in the psnotifyd application of the Pharos PopUp printer client version 9.0

This week

CRITICAL 10.0REMOTEDOWNGRADE

CVE-2017-2788 is a critical-severity flaw (CVSS 10.0) affecting popup. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A buffer overflows exists in the psnotifyd application of the Pharos PopUp printer client version 9.0. A specially crafted packet can be sent to the victim's computer and can lead to a heap based buffer overflow resulting in potential remote code execution. This client is always listening, has root privileges, and requires no user interaction to exploit.

Why this priority

Critical severity
EPSS top 5%: very likely to be exploited
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	7.8% (top 5%)
CISA exploited list	No
Weakness	CWE-119
Published	2017-03-10
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: pharos

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

Am I affected?

Timeline

2017-03-10 10:59 UTCPublished CVE record published
2026-06-17 01:16 UTCUpdated Record last modified

pharos popup DOWNGRADE

Affected: 9.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 9.0 (Debian / Ubuntu)

apt-cache madison popup sudo apt install popup=<VERSION_BEFORE_9.0> sudo apt-mark hold popup

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

dnf --showduplicates list popup sudo dnf downgrade popup-<VERSION_BEFORE_9.0> sudo dnf versionlock add popup

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-2017-2788?

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

Is CVE-2017-2788 being exploited?

CVE-2017-2788 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-2017-2788 affect?

CVE-2017-2788 affects popup. Severity is critical (CVSS 10.0). A buffer overflows exists in the psnotifyd application of the Pharos PopUp printer client version 9.0. A specially crafted packet can be sent to the victim's computer and can lead to a heap based buffer overflow resulting in potential remot

How urgent is CVE-2017-2788?

Priority 64/100. Critical severity; EPSS top 5%: very likely to be exploited; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-52434 CRITICAL 9.1 UPGRADE Deserialization of Untrusted Data vulnerability in supsystic Popup by Supsystic popup-by-supsystic allows Comm
CVE-2024-31421 MEDIUM 4.3 UPGRADE Missing Authorization vulnerability in supsystic Popup by Supsystic popup-by-supsystic.This issue affects Popu
CVE-2023-51353 MEDIUM 5.3 UPGRADE Missing Authorization vulnerability in supsystic Popup by Supsystic popup-by-supsystic allows Exploiting Incor
CVE-2023-46197 MEDIUM 5.3 UPGRADE Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in supsystic.Com
CVE-2023-3186 CRITICAL 9.8 UPGRADE The Popup by Supsystic WordPress plugin before 1.10.19 has a prototype pollution vulnerability that could allo

References

← Back to latest CVEs