How severe is CVE-2022-22243?

CVE-2022-22243 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2022-22243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-22243?

CVE-2022-22243 primarily affects Juniper Junos. In total, 162 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-22243?

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

When was CVE-2022-22243 published?

CVE-2022-22243 was published on 2022-10-18 and last updated on 2026-06-17.

CVE-2022-22243

CVE-2022-22243 is a medium-severity vulnerability in Juniper Junos with a CVSS 3.x base score of 4.3. 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-91.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-91
Affected product: Juniper Junos
Published: 2022-10-18
Last modified: 2026-06-17

Description

An XPath Injection vulnerability due to Improper Input Validation in the J-Web component of Juniper Networks Junos OS allows an authenticated attacker to add an XPath command to the XPath stream, which may allow chaining to other unspecified vulnerabilities, leading to a partial loss of confidentiality. This issue affects Juniper Networks Junos OS: all versions prior to 19.1R3-S9; 19.2 versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S7; 19.4 versions prior to 19.4R2-S7, 19.4R3-S8; 20.1 versions prior to 20.1R3-S5; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S2; 21.2 versions prior to 21.2R3-S1; 21.3 versions prior to 21.3R2-S2, 21.3R3; 21.4 versions prior to 21.4R1-S2, 21.4R2-S1, 21.4R3; 22.1 versions prior to 22.1R1-S1, 22.1R2.

Frequently asked questions

What is CVE-2022-22243?: An XPath Injection vulnerability due to Improper Input Validation in the J-Web component of Juniper Networks Junos OS allows an authenticated attacker to add an XPath command to the XPath stream, which may allow chaining to other unspecified vulnerabilities, leading to a partial loss of confidentiality. This issue affects Juniper Networks Junos OS: all versions prior to 19.1R3-S9; 19.2 versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S7; 19.4 versions prior to 19.4R2-S7, 19.4R3-S8; 20.1 versions prior to 20.1R3-S5; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S2; 21.2 versions prior to 21.2R3-S1; 21.3 versions prior to 21.3R2-S2, 21.3R3; 21.4 versions prior to 21.4R1-S2, 21.4R2-S1, 21.4R3; 22.1 versions prior to 22.1R1-S1, 22.1R2.
How severe is CVE-2022-22243?: CVE-2022-22243 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2022-22243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-22243?: CVE-2022-22243 primarily affects Juniper Junos. In total, 162 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-22243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-22243 published?: CVE-2022-22243 was published on 2022-10-18 and last updated on 2026-06-17.

References

https://kb.juniper.net/JSA69899

Affected products (162)

cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r1-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r1-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r3-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r3-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r3-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.1:r3-s8:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r1-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r1-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r1-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r1-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r1-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r1-s8:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r1-s9:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:19.2:r3-s4:*:*:*:*:*:*

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