CVE-2019-1982: A vulnerability in the HTTP traffic filtering component of Cisco Firepower Threat Defense Software, Cisco Fire

Routine

MEDIUM 5.3REMOTEMITIGATEDOWNGRADEMITIGATE

CVE-2019-1982 is a medium-severity flaw (CVSS 5.3) affecting firepower services software for asa, secure firewall management center, secure firewall threat defense. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in the HTTP traffic filtering component of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software could allow an unauthenticated, remote attacker to bypass filtering protections. The vulnerability is due to improper handling of HTTP requests, including those communicated over a secure HTTPS connection, that contain maliciously crafted headers. An attacker

Why this priority

Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-264, CWE-276
Published	2019-11-05
Last modified	2026-08-11

Publisher (CNA): Cisco Systems, Inc. · Vendor: cisco

Last updated 2026-08-11 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-11-05 20:15 UTCPublished CVE record published
2026-08-11 19:33 UTCUpdated Record last modified

cisco firepower services software for asa MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy firepower-services-software-for-asa || rpm -q firepower-services-software-for-asa || firepower-services-software-for-asa --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

cisco secure firewall management center DOWNGRADE

Affected: 2.9.13 · 2.9.14.0 · 3.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.9.13

1. Check installed version

apt-cache policy secure-firewall-management-center || rpm -q secure-firewall-management-center || secure-firewall-management-center --version

2. No fixed release: DOWNGRADE to a release before 2.9.13 (Debian / Ubuntu)

apt-cache madison secure-firewall-management-center sudo apt install secure-firewall-management-center=<VERSION_BEFORE_2.9.13> sudo apt-mark hold secure-firewall-management-center

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

dnf --showduplicates list secure-firewall-management-center sudo dnf downgrade secure-firewall-management-center-<VERSION_BEFORE_2.9.13> sudo dnf versionlock add secure-firewall-management-center

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.

cisco secure firewall threat defense MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy secure-firewall-threat-defense || rpm -q secure-firewall-threat-defense || secure-firewall-threat-defense --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2019-1982?

firepower services software for asa: mitigate or apply the listed mitigation; secure firewall management center: downgrade or apply the listed mitigation; secure firewall threat defense: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-1982 being exploited?

CVE-2019-1982 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-2019-1982 affect?

CVE-2019-1982 affects firepower services software for asa, secure firewall management center, secure firewall threat defense. Severity is medium (CVSS 5.3). A vulnerability in the HTTP traffic filtering component of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software could allow an unauthenticated, remote attacker to

How urgent is CVE-2019-1982?

Priority 39/100. Remotely exploitable, no login, no user action

Software pages

Cisco vulnerabilities

Related CVEs

CVE-2019-1978 MEDIUM 5.8 MITIGATE UPGRADE A vulnerability in the stream reassembly component of Cisco Firepower Threat Defense Software, Cisco FirePOWER
CVE-2019-1981 MEDIUM 5.8 MITIGATE UPGRADE A vulnerability in the normalization functionality of Cisco Firepower Threat Defense Software, Cisco FirePOWER
CVE-2019-1980 MEDIUM 5.3 MITIGATE UPGRADE A vulnerability in the protocol detection component of Cisco Firepower Threat Defense Software, Cisco FirePOWE
CVE-2022-20927 HIGH 7.7 MITIGATE UPGRADE A vulnerability in the SSL/TLS client of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower
CVE-2022-20918 HIGH 7.5 MITIGATE UPGRADE A vulnerability in the Simple Network Management Protocol (SNMP) access controls for Cisco FirePOWER Software

References

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