How severe is CVE-1999-0013?

CVE-1999-0013 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-1999-0013 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0013?

CVE-1999-0013 primarily affects Ssh. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0013?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-1999-0013 published?

CVE-1999-0013 was published on 1998-01-22 and last updated on 2026-06-16.

CVE-1999-0013

CVE-1999-0013 is a high-severity vulnerability in Ssh with a CVSS 3.x base score of 8.4. 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-522.

Key facts

Severity: High (CVSS 3.x base score 8.4)
CVSS v2: 7.5
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-522
Affected product: Ssh
Published: 1998-01-22
Last modified: 2026-06-16

Description

Stolen credentials from SSH clients via ssh-agent program, allowing other local users to access remote accounts belonging to the ssh-agent user.

Frequently asked questions

What is CVE-1999-0013?: Stolen credentials from SSH clients via ssh-agent program, allowing other local users to access remote accounts belonging to the ssh-agent user.
How severe is CVE-1999-0013?: CVE-1999-0013 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-1999-0013 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0013?: CVE-1999-0013 primarily affects Ssh. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0013?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-0013 published?: CVE-1999-0013 was published on 1998-01-22 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0013

Affected products (15)

cpe:2.3:a:ssh:ssh:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.3:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.6:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.7:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.8:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.9:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.10:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.11:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.12:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.13:*:*:*:*:*:*:*
cpe:2.3:a:ssh:ssh:1.2.14:*:*:*:*:*:*:*

More vulnerabilities in Ssh

CVE-2001-0144 — Critical (CVSS 10.0): CORE SDI SSH1 CRC-32 compensation attack detector allows remote attackers to execute arbitrary commands on an SSH…
CVE-1999-0248 — Critical (CVSS 10.0): A race condition in the authentication agent mechanism of sshd 1.2.17 allows an attacker to steal another user's…
CVE-2011-0766 — High (CVSS 7.8): The random number generator in the Crypto application before 2.0.2.2, and SSH before 2.0.5, as used in the Erlang/OTP…
CVE-2001-0572 — High (CVSS 7.5): The SSH protocols 1 and 2 (aka SSH-2) as implemented in OpenSSH and other packages have various weaknesses which can…
CVE-2001-0471 — High (CVSS 7.5): SSH daemon version 1 (aka SSHD-1 or SSH-1) 1.2.30 and earlier does not log repeated login attempts, which could allow…
CVE-2001-1473 — High (CVSS 7.5): The SSH-1 protocol allows remote servers to conduct man-in-the-middle attacks and replay a client challenge response to…

All CVEs affecting Ssh →

Other CWE-522 (Insufficiently Protected Credentials) vulnerabilities

CVE-2026-7312 — Critical (CVSS 10.0): CWE‑522: Insufficiently Protected Credentials in web services in Progress Sitefinity version from 14.0.7700 to…
CVE-2026-29128 — Critical (CVSS 10.0): IDC SFX2100 Satellite Receiver firmware ships with multiple daemon configuration files for routing components (e.g.,…
CVE-2025-54863 — Critical (CVSS 10.0): Radiometrics VizAir is vulnerable to exposure of the system's REST API key through a publicly accessible configuration…
CVE-2024-12799 — Critical (CVSS 10.0): Insufficiently Protected Credentials vulnerability in OpenText Identity Manager Advanced Edition on Windows, Linux, 64…
CVE-2024-51545 — Critical (CVSS 10.0): Username Enumeration vulnerabilities allow access to application level username add, delete, modify and list…
CVE-2023-1778 — Critical (CVSS 10.0): This vulnerability exists in GajShield Data Security Firewall firmware versions prior to v4.28 (except v4.21) due to…

Browse all CWE-522 (Insufficiently Protected Credentials) vulnerabilities →