CVE-2018-19077: An issue was discovered on Foscam Opticam i5 devices with System Firmware 1.5.2.11 and Application Firmware 2.

This week

HIGH 7.5REMOTEMITIGATEMITIGATEMITIGATE

CVE-2018-19077 is a high-severity flaw (CVSS 7.5) affecting i5 application firmware, i5 system firmware, c2 application firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered on Foscam Opticam i5 devices with System Firmware 1.5.2.11 and Application Firmware 2.21.1.128. RtspServer allows remote attackers to cause a denial of service (daemon hang or restart) via a negative integer in the RTSP Content-Length header.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.2% (top 18%)
CISA exploited list	No
Weakness	CWE-125
Published	2018-11-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: foscam · opticam

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

Am I affected?

Timeline

2018-11-07 18:29 UTCPublished CVE record published
2026-06-17 01:48 UTCUpdated Record last modified

opticam i5 application firmware MITIGATE

Affected: 2.21.1.128

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.21.1.128

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

opticam i5 system firmware MITIGATE

Affected: 1.5.2.11

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.5.2.11

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

foscam c2 application firmware MITIGATE

Affected: 2.72.1.32

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.72.1.32

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

foscam c2 system firmware MITIGATE

Affected: 1.11.1.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.11.1.8

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2018-19077?

i5 application firmware: mitigate or apply the listed mitigation; i5 system firmware: mitigate or apply the listed mitigation; c2 application firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-19077 being exploited?

CVE-2018-19077 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-2018-19077 affect?

CVE-2018-19077 affects i5 application firmware, i5 system firmware, c2 application firmware. Severity is high (CVSS 7.5). An issue was discovered on Foscam Opticam i5 devices with System Firmware 1.5.2.11 and Application Firmware 2.21.1.128. RtspServer allows remote attackers to cause a denial of service (daemon hang or restart) via a negative integer in the R

How urgent is CVE-2018-19077?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-19082 CRITICAL 9.8 MITIGATE MITIGATE An issue was discovered on Foscam Opticam i5 devices with System Firmware 1.5.2.11 and Application Firmware 2.
CVE-2018-19081 CRITICAL 9.8 MITIGATE MITIGATE An issue was discovered on Foscam Opticam i5 devices with System Firmware 1.5.2.11 and Application Firmware 2.
CVE-2018-19080 MEDIUM 6.1 MITIGATE MITIGATE An issue was discovered on Foscam Opticam i5 devices with System Firmware 1.5.2.11 and Application Firmware 2.
CVE-2018-19079 HIGH 7.5 MITIGATE MITIGATE An issue was discovered on Foscam Opticam i5 devices with System Firmware 1.5.2.11 and Application Firmware 2.
CVE-2018-19078 CRITICAL 9.8 MITIGATE MITIGATE An issue was discovered on Foscam Opticam i5 devices with System Firmware 1.5.2.11 and Application Firmware 2.

References

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