How severe is CVE-2019-1853?

CVE-2019-1853 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-1853 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-1853?

CVE-2019-1853 affects Cisco Anyconnect Secure Mobility Client. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-1853?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-1853 published?

CVE-2019-1853 was published on 2019-05-16 and last updated on 2026-06-17.

CVE-2019-1853

CVE-2019-1853 is a medium-severity vulnerability in Cisco Anyconnect Secure Mobility Client with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 5.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Cisco Anyconnect Secure Mobility Client
Published: 2019-05-16
Last modified: 2026-06-17

Description

A vulnerability in the HostScan component of Cisco AnyConnect Secure Mobility Client for Linux could allow an unauthenticated, remote attacker to read sensitive information on an affected system. The vulnerability exists because the affected software performs improper bounds checks. An attacker could exploit this vulnerability by crafting HTTP traffic for the affected component to download and process. A successful exploit could allow the attacker to read sensitive information on the affected system.

Frequently asked questions

What is CVE-2019-1853?: A vulnerability in the HostScan component of Cisco AnyConnect Secure Mobility Client for Linux could allow an unauthenticated, remote attacker to read sensitive information on an affected system. The vulnerability exists because the affected software performs improper bounds checks. An attacker could exploit this vulnerability by crafting HTTP traffic for the affected component to download and process. A successful exploit could allow the attacker to read sensitive information on the affected system.
How severe is CVE-2019-1853?: CVE-2019-1853 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-1853 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-1853?: CVE-2019-1853 affects Cisco Anyconnect Secure Mobility Client. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-1853?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-1853 published?: CVE-2019-1853 was published on 2019-05-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cisco:anyconnect_secure_mobility_client:4.6\(2074\):*:*:*:*:*:*:*

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