How severe is CVE-2013-0249?

CVE-2013-0249 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2013-0249 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-0249?

CVE-2013-0249 primarily affects Haxx Curl. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-0249?

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-2013-0249 published?

CVE-2013-0249 was published on 2013-03-08 and last updated on 2026-06-16.

CVE-2013-0249

CVE-2013-0249 is a high-severity vulnerability in Haxx Curl with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 22% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 22% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Haxx Curl
Published: 2013-03-08
Last modified: 2026-06-16

Description

Stack-based buffer overflow in the Curl_sasl_create_digest_md5_message function in lib/curl_sasl.c in curl and libcurl 7.26.0 through 7.28.1, when negotiating SASL DIGEST-MD5 authentication, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long string in the realm parameter in a (1) POP3, (2) SMTP or (3) IMAP message.

Frequently asked questions

What is CVE-2013-0249?: Stack-based buffer overflow in the Curl_sasl_create_digest_md5_message function in lib/curl_sasl.c in curl and libcurl 7.26.0 through 7.28.1, when negotiating SASL DIGEST-MD5 authentication, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long string in the realm parameter in a (1) POP3, (2) SMTP or (3) IMAP message.
How severe is CVE-2013-0249?: CVE-2013-0249 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2013-0249 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-0249?: CVE-2013-0249 primarily affects Haxx Curl. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-0249?: 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-2013-0249 published?: CVE-2013-0249 was published on 2013-03-08 and last updated on 2026-06-16.

References

Affected products (9)

cpe:2.3:a:haxx:curl:7.26.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.27.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.28.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.28.1:*:*:*:*:*:*:*
cpe:2.3:a:haxx:libcurl:7.26.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:libcurl:7.27.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:libcurl:7.28.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:libcurl:7.28.1:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*

More vulnerabilities in Haxx Curl

CVE-2026-19931 — Critical (CVSS 9.8): A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication,…
CVE-2026-9079 — Critical (CVSS 9.8): libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the…
CVE-2026-8925 — Critical (CVSS 9.8): The curl logic that works with SASL authentication could end up cleaning up the GSASL context *twice* without clearing…
CVE-2026-11856 — Critical (CVSS 9.8): Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then…
CVE-2026-10536 — Critical (CVSS 9.8): A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree via…
CVE-2022-32221 — Critical (CVSS 9.8): When doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data…

All CVEs affecting Haxx Curl →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

CVE-2026-105285 — Critical (CVSS 10.0): A security vulnerability has been detected in Totolink A3002MU 1.0.0-B20230403.1455. This affects an unknown function…
CVE-2026-104610 — Critical (CVSS 10.0): A security vulnerability has been detected in Tenda HG7, HG9 and HG10 300001138_en_xpon. This impacts the function…
CVE-2026-101039 — Critical (CVSS 10.0): A vulnerability was identified in FAST FAC1900R 20190827_2.0.2. Affected by this issue is the function copy_msg_element…
CVE-2026-96257 — Critical (CVSS 10.0): A flaw has been found in Fast FAC1203R Gigabit Edition 2.0.4. Affected by this issue is the function copy_msg_element…
CVE-2026-94089 — Critical (CVSS 10.0): A vulnerability was determined in D-Link DIR-868L 2.01b05. This issue affects the function strcpy of the file…
CVE-2026-94003 — Critical (CVSS 10.0): A vulnerability has been found in Comfast CF-N1-S 2.6.0.1. Impacted is the function get_css_path_from_uri of the file…

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →