How severe is CVE-2013-4873?

CVE-2013-4873 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2013-4873 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4873?

CVE-2013-4873 affects Yahoo Tumblr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-4873?

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

When was CVE-2013-4873 published?

CVE-2013-4873 was published on 2013-07-18 and last updated on 2026-06-16.

CVE-2013-4873

CVE-2013-4873 is a medium-severity vulnerability in Yahoo Tumblr with a CVSS 2.0 base score of 5.0. 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-255.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Yahoo Tumblr
Published: 2013-07-18
Last modified: 2026-06-16

Description

The Yahoo! Tumblr app before 3.4.1 for iOS sends cleartext credentials, which allows remote attackers to obtain sensitive information by sniffing the network.

Frequently asked questions

What is CVE-2013-4873?: The Yahoo! Tumblr app before 3.4.1 for iOS sends cleartext credentials, which allows remote attackers to obtain sensitive information by sniffing the network.
How severe is CVE-2013-4873?: CVE-2013-4873 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2013-4873 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4873?: CVE-2013-4873 affects Yahoo Tumblr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-4873?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4873 published?: CVE-2013-4873 was published on 2013-07-18 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:yahoo:tumblr:*:-:*:*:*:iphone_os:*:*

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